HOLOTHURIOIDEA. (iV, B.) 
Echin. 67 
from type in spicules : M. murrayi ; Sluiter (284) p. 24. M. oktak- 
nemus n. sp., Indian Archipelago, 1158 metres; Sluiter (283) p. 14: 
redescr.; Sluiter (284) p. 27, pi. viii. 
Molpadia demissa n. sp., Indian Archipelago, 330 metres ; Sluiter (284) 
p. 116, pis. iii, x. M. oolitica Sel., syn. of Trochostoma boreale & 
T. ooliticum (p. 485), M. turgidum Verrill, syn. of T. boreale (p. 486); 
Clark (65). 
Muellei'ia agassizii ; Clark (65) p. 494. M. echinites (p. 24), M. lecanora 
(p. 23), M. macidata , variations in colour and warts (p. 23), M. mauri- 
tiana (p. 24), M. miliaris , colour-variations (p. 23); Sluiter (284). 
M. parvula ; Clark (65) p. 494. 
Myriotrochus sp.; Ostergren (231). M. sp. nondescr. with parasite ; 
Kolthoff (174) p. 210. M. rinki ; Clark (65) p. 490: Knipovitsch 
(171): Rankin (252) p. 170: Whiteaves (320) p. 47. 
Ocnus Forbes, syn. of Cucumaria ; Clark (65) p. 485: a growth-stage of 
Cucumaria; Herouard (150) p. xliv : see Cucumaria imbricata. 
0. ayresii Straps., syn. of Cucumaria minuta ; Clark (65) p. 485. 
O. javanicus, Sluiter’s views as to <£ nature appear confirmed by 
Mesothuria ; Theel (298) p. 5. 
Orcula barthi ; Clark (65) p. 494: Whiteaves (320) p. 46. 0. discrepans 
n. sp., Indian Archipelago, under 36 metres (p. 110, pi. vi), 0. liypsi- 
pyrga (p. 109); Sluiter (284). 0. punctata Sel., syn. of 0. barthi; 
Clark (65) p. 485. 0. purpureo-punctata n. sp., Indian Archipelago, 
13 metres ; Sluiter (284) p. 109, pi. vi. 
Paelopatides confundens , measurements, intestinal diverticulum not 
found; Sluiter (284) p. 39. P. fusiformis n. sp., Indian Archipelago, 
883-2050 metres ; Sluiter (283) p. 7: redescr., no stereom, caecum 
on first gut-limb ; Sluiter (284) p. 42. P. illicitus n. sp., Indian 
Archipelago, 2000 metres; Sluiter (283) p. 9: redescr.; Sluiter 
(284) p. 45, pi. ix. P. megalopliarynx n. sp., Indian Archipelago, 
521 metres ; Sluiter (283) p. 7: redescr., differences from generic 
norm, no stereom ; Sluiter (^284) p. 40. P. purpureo-punctatus n. sp., 
Indian Archipelago, 538-1270 metres ; Sluiter (283) p. 8: redescr., 
no stereom, caecum on first gut-limb ; Sluiter (284) p. 43. 
Pannycliia moseleyi , showing differences from type ; Sluiter (284) p. 71. 
P. multiradiata n. sp., Indian Archipelago, 918 metres; Sluiter 
(283) p. 25: redescr.; Sluiter (284) p. 72. 
Peniagone discrepans n. sp., Indian Archipelago, 2053 metres ; Sluiter 
(283) p. 27: redescr.; Sluiter (284) p. 75, pi. x. Peniagone ecalcarea 
n. sp., Indian Archipelago, 1310 metres; Sluiter (283) p. 26: 
redescr., no stereom; Sluiter (284) p. 74, pi. x. Peniagone vignoni 
n. sp., Antarctic, 71° 15' S., 87° 39' W.; Herouard (150) p. xli, no fig. 
Peniagone vitrea\ Sluiter (284) p. 74. 
Pentacta Jager, syn. of Cucumaria ; Clark (65) p. 485. P. calcigera 
(p. 45), P. frondosa & P. minuta (p. 44); Whiteaves (320). P. piper- 
ata Stmps., syn. of Cucumaria nigricans ; Clark (65) p. 485. 
Pentamera Ayres, syn. of Thyone ; Clark (65) p. 485. 
Phyllophorus brocki , slight differences fr. type (p. Ill), P. cebuensis 
(p. 112); Sluiter (284). P. drummondi ; Todd (302) p. 366. P. 
holothurioides (p. Ill), P. injlatus n. sp., Indian Archipelago, 73 
metres, resemblances to Tliyonidium (p. 114, pis. ii, vi), P. magnus 
Ludw., redescr. from complete specimens (p. 112, pis. iv, vii), P. 
schmeltzi , a specimen 8 mm. long found in plankton, its age-differences 
descr. (p. 110); Sluiter (284). 
Protankyra asymmetrica , spicules (p. 129, pi. x), P. bicornis n. sp., 828 
metres, difference from generic type (p. 131, pi. x), P. challengeri , 
n. var. sibogae , 1788 metres (p. 131, pi. iii), P. innominata (p. 129), 
P. insolens (p. 129), P. ludwigi (p. 130), P. rodea (p. 130), P. sibogae 
