BELONOGLANIS. 509 1. BELONOGLANIS TENUIS.
Bouleng. 1. c. pl. xiv. fig. 4.
Depth of body 14 times in total length, length of head 7 times. Head much depressed, 1} times as long as broad, covered above with granular asperities ; a A-shaped ridge on snout; no fontanelle; occipital process trilobate; snout acutely pointed, 4 length of head, strongly projecting beyond mouth; eye 6 times in length of head, 27 times in Fig.880.
Sb ES SE Belonoglanis tenuis.
Type (A. M.C.). 4.
interocular width. Maxillary barbel 2 length of head, mandibulars a little shorter, Coracoid with a broad, rounded, rugose process below base of pectoral. First dorsal I 7, first ray as long as head. Anal 10 (first ray rudimentary). Pectoral nearly as long as head, not reaching ventral ; latter widely separated from anal. Caudal short and notched. Caudal peduncle very thin and depressed, 2 total length. Dorsal scutes 28, from origin of dorsal; 6 large scutes on each side of body, followed by 23 on each side of lower surface of tail, the last 6 uniting with the dorsals on caudal peduncle. Uniform brownish; end of dorsal and anal, second dorsal, and caudal black; a black bar on pectoral and on ventral.
Total length 83 millim.
Ubanghi.—Type in Congo Museum, Tervueren.
510 SILURID.
39. ANDERSONIA.
Bouleng. Ann. & Mag. N. H. (7) vi. 1900, p. 528, and Fish. Nile, p. 392 (1907). Slatinia, Werner, Anz. Akad. Wien, 1906, p. 326. Bedy elongate, depressed, with extremely slender caudal peduncle ; a series of imbricate bony scutes along each side of the back and belly from the dorsal and ventral fins to the caudal peduncle, which is entirely surrounded by bony scutes. ‘wo short dorsal fins, the first above the ventrals and formed of a spine and six branched rays, the second opposed to the anal and formed of fine soft rays preceded by a short spine. Pectoral fin with a strong spine; ventral fin with 6 rays. No cephalo-nuchal shield. Mouth small, inferior, toothless ; lips not much developed. A maxillary and two mandibular barbels on each side. Nostrils rather remote from each other, both with a valve. Eye small, without free border. Gill-openings narrowly interrupted at the isthmus.
Nile.
1. ANDERSONIA LEPTURA.
Bouleng. t. ec. pp. 529, 392, pl. Ixxvi. fig. 4; Werner, Sitzb. Ak. Wien, exv. i. 1906, pl. i. figs. 2-4.
Slatinia mongallensis, Werner, Anz. Ak. Wien, 1906, p. 327. Depth of body 9 to 10 times in total length, length of head 5 to 53 Fig.381.
Andersonia leptura.
Type (f. N.).
times. Head 1} times as long as broad, rugose above; an oval frontal fontanelle, with a ridge on each side of it, which is continued to base of
ANDERSONIA.—MALOPTERURUS. 511 occipital process; snout obtusely pointed, a little shorter than postocular part of head, 23 times as long as diameter of eye, which is 2 interorbital width. Barbels slender, maxillary twice as long as inner mandibular and half length of head, outer mandibular intermediate in length. Occipital process keeled, 2} times as long as broad, widely separated from interneural shield; a shorter process on each side of occipital process. First dorsal I 6, twice as distant from root of caudal as from end of snout, first ray as long as head, bony in its basal twothirds, not serrated. Anal 10. Pectoral 3 length of head, not reaching ventral; spine moderately strong, covered with minute asperities. Caudal with crescentic notch. Caudal peduncle depressed, 3 total length. 25 dorsal and 23 ventral scutes, the last 9 on caudal peduncle ; the dorsal scutes raised in a sharp keel on the outer border. Greyish above, dotted and marbled with blackish, white beneath; four rather indistinct dark bars across the back.
Total length 50 millim.
Upper Nile and Bahr-el-Gebel.
1. Type. Near Kosheh, 8S. of Wady Halfa. L. Loat, Esq. (C.). 40. MALOPTERURUS, Lacep. Hist. Poiss. v. p. 90 (1803) * ; Cuv. & Val. Hist. Poiss. xv. p. 518; Giinth. Cat. Fish. y. p. 219 (1864) ; Bouleng. Poiss. Bass. Congo, p. 336 (1901), and Fish. Nile, p. 394 (1907).
Body moderately elongate, cylindrical or a little depressed. No rayed dorsal fin ; an adipose dorsal fin. -Anal fin short. Pectoral fin without spinous ray. Ventral fin with 6 rays. ‘Three pairs of barbels: maxillary and two mandibular. Nostrils widely separated from each other. Eye lateral, without free border. Each jaw with a band of villiform teeth ; palate toothless. Gill-openings short, restricted to the sides. <Air-bladder very large, free, extending to the origin of the caudal region, divided into two by a constriction. An electric organ extending over the whole body, from the head to the origin of the adipose and anal fins.
Vertebree 41 to 44 (20-22+421-22). 8 branchiostegal rays. Nile and Tropical Africa.
*SpeltMalapterurus.
512 SILURIDE.
1. MALOPTERURUS ELECTRICUS, Raja torpedo, Forsk. Deser. Anim. p. 15 (1775).
Le Trembleur, Brousson. Mém. Ac. Sci. 1782, p. 692, pl. xvii. (1785). Silurus electricus, Gmel. Syst. Nat. i. p. 1351 (1789). Malapterurus electricus, Lacep. Hist. Poiss. v. p. 91 (1803); I. Geoffr. Deser. Egypte, Poiss. p. 291, pl. xii. (1827) ; Joannis, Mag. Zool. 1835, Poiss. pl. i.; Cuy. & Val. Hist. Poiss. xv. p. 518, pl. eceelv. (1840); Giinth. Cat. Fish. vy. p. 219 (1864) ; Peters, Mon. Berl. Ac. 1868, p. 121, and Reise Mossamb. iv. p- 41 (1868); Giinth. Petherick’s Trav. il. p. 240 (1869) ; G. Fritsch, Elektr. Fische, i. (1887) ; Ballowitz, Elekt. Org. Afr. Zitterwels. (1899) : Bouleng. Poiss. Bass. Congo, p. 338, pl. xvi. fig. 2 (1901), and Fish. Nile, p. 395, pls. Ixxvii, & Ixxyiii. (1907).
Rahad, Rifaud, Voy. Egypte, pl. 192 (1835).
Malapterurus beninensis, And. Murray, Edinb. New Philos. Journ. (2) ii. 1855, p- 49, pl. ii.; Giinth. Cat. Fish. v. p. 220; Lonnb. Ofv. Vet.-Ak. Forh. | Stockh. 1895, p. 187.
Malapterurus afinis, Giinth. 1. ¢.
Malapterurus electricus, var. ogoensis, Sauv. Bull. Soc. Phiiom. (7) iii. 1878, p. 99, and N. Arch. Mus. (2) iii. 1880, p. 45, pl. i. fig. 3. Depth of body 4 to 54 times in total length, length of head 4 to 5 times; back flattened, sometimes feebly grooved along the spine. Head Fig.382.
Mualopterurus electricus.
Nile (F. N.). 3.
as long as broad or alittle longer than broad ; snout rounded, about % length of head; lower jaw sometimes slightly projecting ; eye very small, lateral, its diameter 6 (young) to 15 times in length of head ; interocular region 4 (young) to }# length of head; maxillary barbel 5 to $ length of head; outer mandibular barbel longer, often reaching root of pectoral or a little beyond. Adipose dorsal low, 3 to 5 times as long as deep, narrowly separated from caudal. Anal III 6-10. Pectoral rounded, } to 2 length of head, as long as or a little longer 5
MALOPTERURUS. 513 than ventral, which is inserted midway between eye or gill-opening and root of caudal, or a little nearer the latter. Caudal rounded. Grey, brown, or bluish above, white beneath, usually dotted, spotted, or blotched with black; caudal fin darker behind, more or less broadly bordered with orange or red; anal also bordered with orange or red ; pectoral and ventral fins yellowish, reddish, or bright red; young with a light ring round the caudal peduncle, a black bar at the base of the caudal fin, and a crescentic black band on the posterior half of the fin. Total length 600 millim. (grows to 850). Nile and Tropical Africa (except Lake Victoria and Rivers of East Africa north of the Zambesi). 1. Ad.
2. Skel.
ote Ade 5. Ad.
6. Ad.
7-8. Her. & yg. Oslator 10-19. Ye.
20-21. Her. & yg. 22-93, 24. Ad., her., &yg.
25. Her.
DG bAd.
27-29. Her. & yg. 30. Ad.
31. Ad.
32-34. Ad. & her. 35. Ad.
36. Her.
37-40. Her.
41. Her.
5 42. Hor.
Egypt.
oP] Rosetta Nile, downstream side of Barrage. Barrage N. of Cairo. Nile at Cairo. Beni Souef, Low. Nile. Lahun, Bahr Yusuf, Fayum. Near Luxor.
Assuan.
Khartum.
Rosaires, Blue Nile. Sennar, 5 Fashoda, White Nile. Mouth of L. No, White Nile. Kano, Hadeija, L. Chad Basin.
MeCarthy Id., Gambia. Gambia.
R. Offin, Gold Coast. Lagos.
39 Ogun R, at Aro, near Abeokuta.
Benin R.
US ayaa Niger.
Sapelle, Low. Niger. 29 2?
Dr. Riippell (C.). I. Loat, Esq. (C.). J. Petherick, Esq. (C.). Capt. 8. Flower (P.). Li. Loat, sq. (C.). Capt. G. B. Gosling (P.). J. 8. Budgett, Hsq. (C.). Capt. Vipan (P.). R. B. N. Walker, Esq. (P.). Sir A. Moloney (P.). Army Medical College (P.). Major G. I. Bruce (P.). Mrs. Burton (P.). Mr. J.T. Dalton (C.). W. A. Forbes, Esq. (P.). Dr. W. J. Ansorge (C.). Mr. J. D. Hamlyn (C.) ; Hon, W. Rothschild (P.). 2u
514 av i <p yo kc Ey or.
. Her. 0. Hor. oD 1-52. Types of or ie Gr AL.
beninensis. 53. Type of AL effinis. 72 t t rc) > 33 55-56. Her. Ye.
Cr Ou Or He On ay 58-60. Her. & yg. 61. Ad. 62-64. Hor. & yg 65. Her. GG, Gis Ad (eh Wee 69. Her. Se naanna 5 Spi tees .
> fy a9qQ =Sesh 0 ) | Co bo a 3-75. Her. & ye. SILURID_E, Ossomari, Low. Niger. Agber, Niger Delta. Creek Town, Old Calabar. OldCalabar. Fernando Po. Kribi R., 8. Cameroon. Benito R., Spanish Guinea. Gaboon. 2?
Ovgowe. L. Ogemwe, Ogowe. Fan Forest, West Africa. 9 Monsembe, Upp. Congo. New Antwerp, ,, L. Tanganyika. Kalambo, L. Tanganyika. Albertville, Nyamkolo, Bi Dr, W. J. Ansorge (C.). A. Millson, Esq. (C.). Rey. H. M. Waddell (C.). W. Carruthers, Esq. (P.). Miss Kingsley (C.). Capt. Jackson (C.) ; Hon. W. Rothschild (P.). Mr. HE, Seimund (C.). G. L. Bates, Hsq. (C.). ” R. B. N. Walker, Esq. (P.). Miss Kingsley (C.). Dr. W. J. Ansorge ((.). D. W. Mitchell, Esq. (P.). Dr. B. Baikie (C.). Rev. J. H. Weeks (P.). Capt. Wilverth (C.). Prof. J. E. S. Moore (C.). Capt. Heeq (C.). Dr. W. A. Cunnington (C.).
ablabes(Barbus),156. », (Puntius), 156. abyssinicus(Nemachilus),217. acanthomias(Synodontis),400. acutirostris(Chrysiehthys),319. acutivelis(Arius),322. adansonii(Bagrus),283. Ph (Eutropius), 283. afer(Barbus),178. affinis(Barbus),47. » (Malapterurus), 512. africanus(Arius),389. afro-fischeri(Synodontis),425,452. Ailiasomalensis,301. akakianus(Barbus),122. alberti(Synodontis),454. Alburnusalexandrinus,193. A eallensis, 188. a niloticus, 193. alexandrinus(Alburnus),193. Allabenchelys,266. 5 brevior, 266. # longicauda, 267. alluaudi(Clarias),253. altianalis(Barbus),36, alticola(Barbus),55. altidorsalis(Barbus),101. altipinnis(Auchenoglanis),372. 9 (Eutropius), 283. alius(Barbus),117. amphigramma (Barbus), 145.
Amphilius,353.
angustifrons, 362.
5 atesuensis, 360. ee brevis, 361. a grandis, 355. * hargeri, 358. Pr krefftii, 356. leroyi,355.
we longirostris, 359. DE x Amphiliusnigricaudatus,361. aA platychir, 357, 360. Hi uranoscopus, 354 395, 357. amplexicauda(Clarias),261. Ancharius, 378.
a brevibarbis, 380. ‘Sy fuscus, 379. Andersonia, 510.
5 leptura, 510. anema(Barbus),182. angelicus(Synodontis),440. angolensis(Clarias),250. 5 (Doumea), 497. anguillaris(Clarias),226,231. is (Heterobranchus), 235. es (Macropteronotus), 226. 0 (Platystacus), 278. “ (Plotosus), 278. + (Silurus), 226, 235. angustifrons(Amphilius),362. 5 (Anoplopterus), 362. Anoplopterus, 353.
Pre: angustifrons, 362. a longirostris, 359. rs platyechir, 357. = uranoscopus, 354. anoplus(Barbus),177. ansorgil(Barbus),126. 4 (Phractura), 50+. antinoril(Barbus),112. apleurogramma (Barbus), 144.
apus (Channallabes), 271.
5 (Gymnallabes), 271. arab(Plotosns),279. arabi (Synodontis), 40-4.
arcislongé(Barbus),169. argentea (Neobola), 212.
argenteus(Barbus),169. 0 (Engrauliey pris), 212. Ariodes, 383.
OIL, A
516 Arius,383.
acutivelis, 322.
» atricanns, 389. » falearius, 389. gigas, 380.
heudeleti, 387.
kirkii,389.
.. datiscutatus, 385, 386- +»madagascariensis,38S. 5 mare 385, 387. asper (Barbus), 76. aspilus(Barbus},181. ater(Galeichthys),332. atesuensis(Amphilius),360. atlantica(Capoéta),87. atlanticus(Barbus),87. Atopochilus,490. “ euentheri, 487ee macrocephalus, 495. savorgnani, 490.
anescnuneysy 386.
= biseutatus, 867, 369. Auchenoglanis, 366.
a altipinnis, 372. EY ballayi, 373. on guttatus, 364. = macrostoma, 365. ngamensis, 371.
oa occidentalis, 369. pulcher, 372.
5 punctatus, 376. es tavganicanus, 369. 5 tehadiensis, 369. Te Gee 7 ubangensis, 375. auratus(Bagrus),325. ., (Chrysichthys), 324, 325, 327. , (Cyprinus), 218. > (Pimelodus), 325. » (Poveus), 325, » (Schilbe), 293. aureus(Barbus),90. », (Labeobarbus), 90. auritus(Schilbe),298. » (Siluranodon), 298. Bagrine,219. Bagrus,304,381- » auratus, 325. bayad,305,397. 5 capensis, 381. INDEX.
Bagruscapito,325. » degeni, 311. » depressirostris, 291. + doemae, 308. » laticeps, 342. » Maurus, 321. >» Meridionalis, 312. » nhigrita, 842. >» orientalis, 307. » schilbeoides, 283. >» ubangensis,313. urostigma, 312.
baleen (Pimelodus), 373.
ballayi(Auchenoglanis),373. banguelensis (Barbus), 151.
35 (Eutropius), 282. Barbus, 1.
» ablabes, 156. 5 adansonii, 282. 2 afer, 178. >» aftinis, 47- » akakianus, 122. » altianalis, 36. >» alticola, 55. » altidorsalis, 101. so tis ING » amphigramma, 145. Fe anema, 182. » anoplus, 177. ee ansorgii, 126. + antinorn, 112. > apleurogramma, 144. >» arcislonge, 169. a argenteus, 136. » asper, 176. » aspilus, 181. atlanticus, 87.
os aureus, 90. », banguelensis, 151. » batesii, 43, . bingeri, 69. ., biany, 26. biscarensis, 108.
>» bettegi, 70. » bowkeri, 39. % brazze, 180, 9 breijeri, 103. », brevibarbis, 49. », brevicauda, 64. » bruceii, 80. » burchelli, 146.