SYSTEMATIC. (IV, A, B.) 
Echin. 63 
represented in the ‘Siboga’ collections: Ord. i. Actinopoda , Fam. 1. 
Holothuriidae , Subfam. a. Holothuriinae [incl. Synallactinae \, IIolo- 
tliuria , Labidodemas , Muelleria , Mesothuria , Stichopus , Bathyplotes , 
Bathyherpystikes , Paelopatides , Synallactes , Meseres , Pseudostichopus : 
Anhang : Elpidienahnliche Holothuriidae , Subfam. b. Psychropotinae , 
Benthodytes , Subfam. c. Deimatinae, Deima , Scotocleima , Laetmogone , 
Hyodaemon , Pannychia , Peniagone , Scotoanassa , Enypniastes, Fam. 
2. Cucumariidae , Cucumaria , Thy one , Golochirus , Psolus, Psolidium , 
Pseudocucumis , Orcula , Phyllophorus , Sphaerothuria , Fam. 3. J/oG 
padiidae , Molpadia , Haplodactyla , Trochostoma , Ankyroderma. Ord. 
ii. Par actinopoda, Fam. Synaptidae , Euapta , Synapta , Labidoplax , 
Chondrocloea , Protankyra , Chirodota , Sigmodota ; Sluiter (284).— 
Keys for identification of spp. of N. American for genera see 
hi, a, ii & iv ; Clark (65). 
t Achistrum, v. Ancistrum . 
Actinopyga Brown, syn. of Mulleria ; Clark (65) p. 484. 
Ananus holothurioides , Sluiter’s views as to nature appear confirmed 
by Mesothuria ; Theel (298) p. 5. 
Anaperus Trosch., syn. of Thyone ; Clark (65) p. 484. 
t Ancistrum :—A. nicholsoni ; Smith (285). Achistrum nicolsoni [sic] ; 
Peach (235) p. 223. 
Ankyroderma danielsseni, and young (p. 120), A. dispar n. sp., 462 metres 
(p. 122, pi. x), A. perforata n. sp., 330-1886 metres (p. 121, pi. x), A. 
spinosum (p. 120), A. tridens n. sp., 330-462 metres (p. 122, pi. x): 
Indian Archipelago ; Sluiter (284). 
Auricularia in general, A. Synaptae digitatae (p. 6 & fig.), A. Gucumariae 
(p. 7 & fig.), Auricularia assigned to Holothuria tremula by Dan. & 
Kor. probably belongs to a Dendrochirote (p. 8 & fig.), A. PsoA' (p. 8 
&fig.); Mortenseh (214). 
Bathyherpustikes , n. g. of Synallactinae , with genotype /i. punctatus 
n. sp., Indian Archipelago, 310-400 metres ; Sluiter (283) p. 6. 
Bathyherpystikes , spelling corrected and diagnosis, 5. punctatus , redescr.; 
Sluiter (284) p. 37, pi. viii. 
Bathyplotes monoculus n. sp., Indian Archipelago, 310-462 metres; 
Sluiter (283) p. 3, redescr.; (284) p. 35, pi. viii. i>. phlegmaticus 
n. sp., Indian Archipelago, 397 metres ; Sluiter (283) p. 4, redescr., 
(284) p. 36, pis. ii, viii. i>. rubicundus n. sp., Indian Archipelago, 
56-450 metres; Sluiter (283) p. 2, redescr., intermediate betw. 
Stichopus and Bathyplotes ; (284) p. 34, pis. iii, viii. i>. sulcatus 
n. sp., Indian Archipelago, 450-924 metres; Sluiter (283) p. 1, 
redescr.; (284) p. 32, pi. viii. 
Benthodytes hystrix n. sp., Indian Archipelago, 2798 metres; Sluiter 
( 283) p. 19, redescr.; (284) p. 59, pis. iv, ix. B. salivosus n. sp., 
Indian Archipelago, 521 metres; Sluiter (283) p. 19, redescr., no 
spicules ; (284) p. 58. B. sibogae n. sp., Indian Archipelago, 694- 
1914 metres ; Sluiter (283) p. 17, redescr.; (284) p. 55, pis. i, ix, x. 
Botryodactyla Ayres, syn. of Cucumaria (p. 484), B. affnis and B. grandis 
Ayres, synn. of C. frondosa ; Clark (65) p. 486. 
Gaplieira , relations to Holothuria ; Sluiter (284) p. 5. 
Gaudina arenata ; Clark (65) p. 490 : Whiteaves (320) p. 47. 
Cheiridota et Cheirodota , vide Chiridota. 
Chiridota :—t C. sp., spicules, Turonian and Danian ; Geinitz (129) 
p. 289. C. brevis Huxley, syn. of Myriotrochus rinki (p. 485), C. 
discolor , probably = C. laevis (p. 489) ; Clark (65). C. laevis ; Clark 
( 65) p. 489 : Whiteaves (320) p. 47. +C. primaeva ; Smith (285). 
G. rigida, slight differences from type ; Sluiter (284) p. 133. G. 
robertsoni ; Smith (285). C. rotifera ; Clark (65) p. 489 : habitat, 
size, viviparous ; Clark (64) pp. 341, 345. C. rufescens ; Sluiter 
