AUCHENOGLANIS. 373 Brown above, with ill-defined large round darker spots above the lateral line and a longitudinal dark band below it; belly whitish, rayed fins without spots.
Fig.288.
Auchenoglanis altipinnis.
Ato Total length 210 miilim.
South Cameroon (Ja River, Congo System).
1. Type. Ja R. at Hsamesa, G. L. Bates, Esq. (C.).
5. AUCHENOGLANIS BALLAYI.
Pimelodus balayi, Sauv. Bull. Soc. Philom. (7) iii. 1878, p. 98, and N. Arch. Mus. (2) iii. 1880, p. 44; Vaill. Bull. Soc. Philom. (8) vi. 1894, p. 77. Pimelodus guirali, Thomin, Bull. Soc. Philom. (7) x. 1886, p. 162. Auchenoglanis ballayi, Bouleng. Poiss. Bass. Congo, p. 295 (1901 ). Auchenoglanis pulcher, Bouleng. Proc. Zool. Soc. 1902, i. p. 267, pl. xxix. fig. 2. Depth of body 4 to 54 times in total length, length of head 3 to 34 times. Head moderately depressed, 14 to 14 times as long as broad, its upper surface smooth or feebly rugose; operculum with more or less distinct radiating strive; occipital process small, longer than broad, narrowly but distinctly separated from the feebly developed interneural plate; snout pointed, } or a little more than } length of head; eye supero-lateral, 7 to 10 times in length of head, 2 to 3 times in interorbital width ; mouth small, nearly terminal, with thick papillose lips ;
374 SILURIDZ.
premaxillary teeth in a small reniform group. Maxillary barbel } to 3 length of head, inner mandibular 4 to 3, outer mandibular as long as head or a little shorter, reaching base of pectoral fin. Gill-rakers rather long and widely set, 8 or 9 on lower part of anterior arch. Humeral process narrow, pointed, smooth or striated. Dorsal I 7; spine moderately strong, smooth or with very feeble retrorse serre on anterior side of distal third, } to 2 length of head; longest rays shorter than head. Adipose dorsal 4 to 6 times as long as deep, as long as or much longer than its distance from rayed dorsal, not extending to root of caudal. Anal 11-12 (7-8 rays branched). Pectoral not reaching ventral; spine strong, strongly serrated on inner side. Ventral not reaching anal. Fig.239.
ot KK Auchenoglanis ballayt.
Young, type of A. pulcher (P. Z. S. 1902). Caudal rounded. Brown or olive, with round blackish spots, white beneath ; the spots forming regular transverse series in the young; an elongate blackish blotch may be present on each side above the pectoral ; dorsal and caudal fins with small round blackish spots. Total length 350 millim.
Cameroon, Gaboon, Congo.—Type in Paris Museum. 1, 2-5. Ad. & yg. Kribi R., S. Cameroon. G. L. Bates, Esq. (€.). 6, 7. Skels. By a o) Nig: Zima Country, S. Cameroon. if 9. Hgr. Nyong R., sf Bs 10-11. Yg. Ja R. at Bitye, y ns 12. Ad. Ja R. at Hsamesa, _,, re 13. Yi; Ngomo, Ogowe. Rev. HE. Haug (C.) ; Paris Museum (B.).
14. Yg. Abanga R., Ogowe. Dr. W. J. Ansorge (C.). 15-16. Yg.,tvpes Lindi R., Upper Congo. M. M. Storms (C.) ; of A. pulcher. Brussels Museum (P.).
oo =1 ou AUCHENOGLANIS.
6. AUCHENOGLANIS UBANGENSIS.
Bouleng. Ann. Mus. Congo, Zool. ii. p. 41, pl. xi. fig. 3 (1902). Depth of body 5 times in total length, length of head 33 times. Head 14 times as long as broad, feebly rugose above ; snout pointed, half length of head; occipital process small, longer than broad, not reaching the feebly developed interneural plate; eye supero-lateral, 6 times in length of head, 2 times in interorbital width ; mouth half Fig.290.
Auchenoglanis ubangensis.
Type (A. M.C.). 2.
width of head; premaxillary teeth forming a small reniform group. Maxillary and inner mandibular barbels equal, } length of head; outer mandibular 14 times length of head, nearly reaching extremity of pectoral fin. Humeral process small, pointed, striated. Dorsal I 7; spine smooth, with a few very feeble retrorse serree on the anterior border near the extremity, 4 length of head. Adipose dorsal 4 times as long as deep, separated from rayed dorsal by a space equal to # its length, narrowly separated from caudal. Anal 12 (8 rays branched). Pectoral not reaching ventral, spine strong, smooth on outer side, with
376 SILURIDA.
rather strong serr on inner side. Ventral not reaching anal. Caudal rounded (2). Dark brown above, whitish beneath.
Total length 165 millim.
Ubanghi.—Type in Congo Museum, Tervueren.
7. AUCHENOGLANIS PUNCTATUS.
Bouleng. Proc. Zool. Soc. 1902, i. p. 267, pl. xxix. fig. 1. Depth of body 5 times in total length, length of head 5 times. Head smooth, 13 times as long as broad; snout pointed, 3 length of head ; eye 6 times in length of head, hardly twice in interocular width ; width of mouth more than half that of the head; lips wide, papillose; premaxillary teeth forming a short and narrow band, the mandibulars two rounded groups; maxillary barbel as long as head, reaching middle of pectoral spine; outer mandibular barbel 14 times length of head, inner $; occipital process small, as long as eye, separated from the interneural shield, which is very small. Humeral process small, pointed. Dorsal I 7; spine smooth, 2 length of head. Adipose dorsal 4 times as long as deep, nearly reaching caudal, narrowly separated from rayed dorsal. Pectoral spine half as long as head, its inner edge strongly Vig.291, Auchenoylanis punctatus.
Type (P. Z. 8. 1902).
serrated. Ventral not reaching anal. Anal 10 (7 rays branched). Caudal rounded. Pale brownish, with seven indistinct darker bars, each accompanied by a vertical series of black dots ; belly white; dorsal and caudal fins with transverse series of dark spots. Total length 80 millim.
Lindi River, Upper Congo.—Type in Brussels Museum.
oo =I=~ NOTOGLANIDIUM.
24. NOTOGLANIDIUM.
Giinth. Proce. Zool. Soc. 1902, ii. p. 336. Body moderately elongate, feebly compressed. Dorsal and anal fins rather long, the former composed of a spine and 14 or 15 branched rays, and followed by a very long adipose fin which extends to the caudal. Ventral fin with 6 rays, inserted below the posterior part of the dorsal. Three pairs of barbels: maxillary and two mandibulars. Nostrils widely separated from each other, the anterior tubular and on the upper lip, the posterior slit-like. Eye superior, without free border. Premaxillaries small ; maxillaries rather long, hidden in the much developed, papillose lip; jaws with villiform teeth; palate toothless. Gillmembranes feebly notched, narrowly attached to isthmus. Gold Coast.
1. NOTOGLANIDIUM WALKERI.
Giinth. t. c. p. 337, pl. xxxii.
Depth of body 5 times in total length, length of head 33 times. Fig.292.
Notoglanidium walkerv.
Type, after Giinther (P. Z. S. 1902). 3.
Head rather strongly depressed, 1} times as long as broad, smooth above; snout obtusely pointed, a little shorter than postocular part of
378 SILURID.
head; no occipital process; posterior nostril nearer eye than end of snout; eye small, 9 times in length of head, 34 times in interocular width. Maxillary barbel 2 length of head, inner mandibular 4, outer mandibular nearly as long as head. Premaxillary teeth forming a reniform group. Géill-rakers few, wide apart. Dorsal I 14-15, rather low, a little nearer end of snout than root of caudal; spine short and smooth, + length of head. Adipose dorsal low, originating at a short distance from the rayed dorsal. Anal 11-12 (9 rays branched). Pectoral 2 length of head; spine strong, not quite 4 length of head, with a few retrorse serre on both sides. Ventral midway between end of snout and root of caudal. Caudal rounded. Reddish brown, darker on the back, with round dark brown spots; smaller spots on the dorsal and caudal fins.
Total length 120 millim.
Gold Coast.
1-2. Types. Ibbi R. R. B. N. Walker, Esq. (C.) ; Dr. A. Giinther (P.).
25. ANCHARIUS.
Steind. Sitzb. Ak. Wien, Ixxxii. i. 1880, p. 251; Sauv. Hist. Madag., Poiss. p. 478 (1891).
Body moderately elongate, feebly compressed. Dorsal and anal fins short, the former composed of a spine and 7 branched rays, and followed by a rather long adipose fin. Ventral fins with 6 rays, well behind the dorsal. Three pairs of barbels: maxillary and two mandibulars. Nostrils rather widely separated from each other. Eye supero-lateral, with free border. Mouth moderately large, with broad bands of small, setiform, bicuspid teeth; palate toothless. Gill-membranes narrowly attached to isthmus, not notched, forming a continuous transverse fold. Madagascar.
Two species :— Maxillary barbel a little longer than head, reaching beyond base of pectoral; latter reaching ventraly.na eae ae Maxillary barbel 3 length of head, not reaching base of pectoral; latter not reaching JOR! Soa Bia 5 5 0 oO One eR BU athintTD, Illa, jen Gel) 1, A. fuscus, Stdr., p. 379.
ANCHARIUS. 379 1, ANCHARIUS FUSCUS.
Steind. |. c. pl. iii. fig. 3 & pl. iv.; Sauv. |. c. pl. xlvii. a. fig. 2. Depth of body 3% times in total length, length of head 33 times. Head nearly as long as broad, rugose, granulate from between the eyes to the extremity of the occipital process, which is longer than broad and in contact with the small, likewise granulate, interneural plate; snout broadly rounded, twice as broad as long, ? length of head ; nostrils near end of snout; eye rather small, 8 times in length of head, 3 times in interorbital width ; mouth wider than interorbital region. Maxillary barbel as long as head, reaching extremity of humeral process ; outer mandibular barbel about 3 length of head, inner about 3. Humeral process twice as Ancharius fuscus.
Type, after Steindachner (J. ¢.). 3. long as eye, pointed, granulate. Dorsal I 7, nearer end of snout than root of caudal; spine strong, nearly as long as head, granulate in front ; adipose dorsal 4 times as long as deep, 4 times as long as its distance from rayed dorsal, narrowly separated from caudal. Anal 17. Pectoral slightly longer than head, extending to root of ventral, its spine similar to that of dorsal, but serrated on inner side. Ventral midway between eye and caudal. Caudal deeply forked. Caudal peduncle short. Dark purplish brown above, lighter beneath. Total length 190 millim.
Tohizona, Madagascar.—Type in Vienna Museum.
380 SILURID.®.
2, ANCHARIUS BREVIBARBIS, sp. n:
Depth of body 5 times in total length, length of head 4 times. Head a little longer than broad, feebly rugose from between the eyes to the extremity of the occipital process, which is longer than broad and in contact with the small interneural plate; snout rounded, 13 times as broad as long, nearly } length of head; nostrils near end of snout; eye moderate, 53 times in length of head, twice in interorbital width, which equals width of mouth. Maxillary barbel 4 length of head, not reaching base of pectoral; outer mandibular barbel + length of head, inner 4. Humeral process as long as eye, pointed, granulate. Dorsal I 7, nearer Ancharius brevibarbis.
Type.32.
end of snout than root of caudal; spine strong, ? length of head, smooth ; adipose dorsal 3} times as long as deep, 13 times as long as its distance from rayed dorsal, narrowly separated from caudal. Anal 12 (9 rays branched). Pectoral slightly shorter than head, not reaching ventral, its spine similar to that of dorsal, but serrated on inner side. Ventral midway between eye and caudal. Caudal deeply forked. Caudal peduncle short. Blackish brown above, whitish beneath. Total length 150 millim.
Madagascar.
1. Type. Ambohimango, Dr, Forsyth Major (C.).