66 Eel tin. 
XIV. ECHINODERMA. 
habitat, colour ; Clark (64) p. 343 : and young (?); Clark (66) p. 259, 
pi. xvii. II . rigida\ Clark (65) p. 495 : its resemblances to Stichopms \ 
Sluiter (284) p. 15. H. scabra , colour-variation (p. 11), H. sluiteri , 
slight variations from type (p. 10), H . squamifera , habitat (p. 7), 
H. submersa n. sp., Indian Archipelago, 247 metres (p. 18, pis. i, vi); 
Sluiter (284). H . surinamensis ; Clark (64) p. 344 & (66) p. 259. 
H . tenuissirna , only 60 mm. long ; Sluiter (284) p. 14. H . tremula , 
v. sub Auricularia. H . triremis n. sp., Indian Archipelago, on Luci- 
para reef; Sluiter (284) p. 19, pi. vi. H . tubulosa, general anat., 
specially the gut and vascular systems, process of nutrition; Cohxheim 
( 70): see n, f, viii ; Rawitz (255 & 256): osmosis ; Bottazzi (38) 
p. 63. H. vagabunda (p. 12), H. verrucosa (p. 13), H . vitiensis (p. 13) ; 
Sluiter (284). 
Hypsilothuria v. Sphaerothuria. 
Ilyodaemon abstrusus n. sp., Indian Archipelago, 694-959 metres; Sluiter 
(283) p. 24 : redescr.; Sluiter (284) p. 69, pis. iv, ix. I. fimbriatus 
n. sp., Indian Archipelago, 827 metres; Sluiter (283) p. 23: 
redescr., entails extension of generic diagnosis in direction of Laetmo- 
gone ; Sluiter (284) p. 67, pi. ix : n. var. magnus , 709 metres; 
Sluiter (283) p. 24: redescr.; Sluiter (284) p. 69. I. macidatus ; 
Sluiter (284) p. 66, pi. ii. 
Kolga hyalina ; Ostergren (231): photograph ; Kolthoff (174) p. 96 
& p. 210. 
Labidodemas egestosum n. sp., Indian Archipelago, Saleyer reef, no 
stereom (p. 22), Labidodemas semperianum , inch L. selenkianum & 
L. dubiosum, growth-changes, variation in spicules (p. 21); Sluiter 
(284) . 
Labidoplax incerta ; Sluiter (284) p. 125. 
Laetmogone enisus n. sp., Indian Archipelago, 204 metres ; Sluiter (283) 
p. 22: redescr., occurs on hard coral sand ; Sluiter (284) p. 65, 
pis. ii, ix. L. interjacens n. sp., Indian Archipelago, 794 metres ; 
Sluiter (283) p. 21: redescr.; Sluiter (284) p. 64, pi. ix. L. violacea , 
differences from type, perhaps due to age (p. 62), L. wyville-t/iomsoni 
(p. 63); Sluiter (284) p. 63. 
Leptosynapta Yerrill, syn. of Synapta ; Clark (65) p. 484. 
Liosoma Brandt, syn. of Chiridota, & Liosoma Stmps., syn. of Trochostoma 
(p. 485), L. sitchaense Brandt, syn. of Chiridota discolor (p. 486); 
Clark (65). 
Lophothuria Yerrill, syn. of Psolus ; Clark (65) p. 485. L. fabricii ; 
Whiteaves (320) p. 45. 
Ludwigia n. g. of Cucumariidae with genotype L. ocnoides Dendy (as 
Colochirus) and anatomical description of sp., meristic var.; Reiffex 
(258). 
Meseres uivolutus n. sp., Indian Archipelago, 567-918 metres ; Sluiter 
( 283) p. 11: redescr.; Sluiter (284) p. 49, pi. viii. M. hyalegerus 
n. sp., Indian Archipelago, 204 metres ; Sluiter (283) p. 12 : redescr.; 
Sluiter (284) p. 50, pi. v. M. peripatus n. sp., Indian Archipelago, 
794-1200 metres ; Sluiter (283) p. 10 : redescr.; Sluiter (284) p. 48, 
pis. v, viii. 
Mesothuria bifurcata n. sp., Antarctic 71° S., 89° W.; Herouard (150) 
p. xxxix, no fig. M. holothurioides n. sp., Indian Archipelago, 567 
metres; Sluiter (283) p. 14: redescr.; Sluiter (284) p. 28, pi. ix. 
M. intestinalis is , see n, b, i, b, 12\ Theel (298), (see also Holo- 
thuria). M. lactea , spicular variations, the sp. is not a Synallactes as 
Herouard says, nor can it support the genus Zygotliuria Perrier; 
Sluiter (284) p. 25. M. marginata n. sp., Indian Archipelago, 
655-924 metres ; Sluiter (283) p. 13 : redescr., perh. should be new 
genus; Sluiter (284) p. 26, pi. viii. M. midtipes , slight differences 
