EGHINONEUS PLATE 27. PERE TA I G Ex. 1899-1900. FI I “ALBATROSS TROPIGAL PAG! B.Meisel lith AM Westersren del.
a a
PLATE28. 1-24. Echinonéus cyclostomus LESKE. 1— Actinal tube-foot 0.65 mm.
long, seen in profile, from near actinostome in odd anterior ambulacrum. 2 — Actinal tube-foot, seen from above the disk, from right anterior ambulacrum. 3.— Profile of an actinal tube-foot, from odd anterior ambulacrum. 4.—Diskplates0.7mm.indiameter,seenfromabove,nearactinostome,inoddanteriorambulacrum. 5.—Oneofthediskplates,wholedisk0.22mm.indiameter,fromrightanteriorambulacrum,actinal side. 6.—Diskplates0.14mm.indiameter,seenfromabove,fromoddanteriorambulacrum,towards apical system. Figures1-3,5and6,arefromatestwithspinesmeasuring25mm.long.Figure4fromatest withspinesmeasuring7mm.long.PortAntonio,Jamaica. 7.— One of the disk plates, seen from below with yoke-shaped spicules, whole disk 0.22 mm.
in diameter, fromoddanteriorambulacrumactinalside,testwithspinesmeasuring30mm.long. Barbados (?). 8.— One of the disk plates, from tube-foot near actinostome, left anterior ambulacrum, test with spines measuring30mm.long.Barbados(?). 9.—Oneofthediskplatesfromtube-footnearactinostome,leftanteriorambulacrum,testwithspines measuring26mm.long.Barbados(?). 10.— Abactinal tube-foot 0.22 mm.
long, seen in profile, from near ocular plate, odd anterior ambulacrum, testwithspinesmeasuring12mm.long.MakemoIsland,PaumotuIslands. 11.—Diskplates0.15mm.indiameter,seenfromabove,actinalside,oddanteriorambulacrum,test with spines measuring 12 mm. long. Makemo Island. = 12.—Oneofthediskplates,wholedisk0.20mm.indiameter,fromoddanteriorambulacrum,actinal side,testwithspinesmeasuring18mm.long.MakemoIsland. 13.—Diskplates0.10mm.indiameter,seenfromabove,neartheocularplate,inoddanteriorambulacrum,testwithspinesmeasuring12mm.long.MakemoIsland. 14.—Oneofthediskplates,wholedisk0.19mm.indiameter,fromoddanteriorambulacrum,actinal side,testwithspinesmeasuring23mm.long.FakaravaIsland,PaumotuIslands. 15.— Peripodium at the edge of actinostome. : 16.— Fifth peripodium from actinostome. 17.— Peripodium at the ambitus. 18.— Peripodium near ocular plate. Figures 15-18, odd anterior ambulacrum, test with spines measuring 34mm. long. Lord Howe Island. 19.— First and second peripodia at the edge of actinostome, odd anterior ambulacrum, test with spines, measuring 37 mm.
long. Mauritius. 20.— Fifth peripodium from actinostome, same specimen as Figure 19.
21.— Peripodium at the edge of actinostome, odd anterior ambulacrum, test without spines measuring 27mm.long.Pacifie(?). 22.— Fifth peripodium from actinostome, same specimen as Figure 21.
23.— Fifth peripodium from actinostome, odd anterior ambulacrum, test with spines measuring 27 mm.
long. Makemo Island. 24.— Fifth peripodium from actinostome, odd anterior ambulacrum, test with spines measuring 26 mm.
long. Jamaica. The enlargement of all the figures is not identical.
“ALBATROSS’ TROPIGAL PAGIFIG Ex.
1899-1900. A.M Westereren del.
EGHINONEUS PLATE 28.
B Meisel lith
PLATE29. 1-14. Micropetalon purpureum A. Aacassiz and H. L. Crark. 1.—Actinalsideofadryspecimen,17mm.longincludingspines,fromtheHawaiianIslands. 2.—Thesamefromtheabactinalside. 3.— The same in profile, facing left anterior interambulacrum and left posterior interambulacrum. 4.— Exterior view of abactinal system, denuded, showing the madreporite and genital pores. 5.—ThesameasFigure4,fromtheinterior. 6.— Odd anterior ambulacrum, showing pores and arrangement of primary tubercles and milliaries. 7.— Seventh plate from the edge of actinostome, in left anterior interambulacrum. 8.— Plate from posterior interambulacrum, abactinal side near the apex. 9.— Peripodium, at the edge of actinostome in odd anterior ambulacrum. 10.— Fifth peripodia from the actinostome. 11.—Oneoftheperipodiaintheambitus. 12.— Peripodium near the ocular plate. 13.— Sphaeridium, first from edge of actinostome, in odd anterior ambulacrum. 14.— Second sphaeridia, from same ambulacrum as preceding.