SYSTEMATIC. (iV, A, B.) 
Echin. 55 
General history and criticism of recent classifications by Perrier, 
P. H. Carpenter, Semon, Hamann, Cuenot, Bell, MacBride, Bury, 
Bather, Sollas, Neumayr, Haeckel, and proposal to form two sections, 
not named, one for Hoi. and Grin, [presumably all Pelmatozoa\ the 
other for Oph., Ast ., and Ech .; Busso (245). 
(B.)— HOLOTHURIOIDEA. 
Achlyonice , vide sub Elpidinae. 
Allantis n. g. of Synallactinae , with genotype Holothuria intestinalis 
(p. 21), A. intestinalis var. verrilli , descr. (p. 18, pi. i); Herouard 
(127). 
Ankyroderma, spicules; Herouard (125). A. darnelsseni ; Herouard 
( 127) p. 45: is syn. of A. musculus\ Perrier (221). Vide etiam sub 
Molpadia. 
Bathyplotes, inch Herpysidia, and probably Stichopus challengeri and 
S. moseleyi ; Herouard (124). B. sp.; Albert (4) p. 963: Richard 
( 238) pp. 88, 89. 
Benthodytes janthina, aliform expansion; Herouard (127) p. 30. 
Chirodota ,—fC.sp.; Hall (118) p. 82, pi. xi. C. discolor, C. laevis ; Clark 
( 46) p. 562. C. pisanii , parasite; Voigt (290). 
Cucumaria crocea ; Bell (17) p. 214. C.frondosa\ Pearcey (208) p. 306. 
C. fucicola, habitat, food of fish ; Pearcey (218) p. 306. C. japonica, 
short descr.; Clark (46) p. 562. C. lactea, food of fish; Pearcey 
( 218) p. 306. C. laevigata, anatomy and hermaphroditism; Acker- 
mann (2). C. lubrica, slight differences from type; Clark( 46) p. 563. 
C. planci ; Gourret (104). C. vegae ; Clark (46) p. 563. 
Deima sp.; Alcock (5) p. 290 and fig. D. atlanticum, full description 
and colour in life ; Herouard (127) p. 32, pis. iii, iv, v, viii. 
Elpidia incerta and E. purpurea , referred to Peniagone (p. 38), E. verrucosa , 
referred to Scotoplanes (p. 37), E. willemoesi, referred to Peniagone 
(p. 38); Herouard (127). Vide etiam sub Prpa et Tutelcc. 
Elpidinae, characters discussed, species resorted into genera —Elpidia 
(type E. glacialis), Parelpidia (type P. elongata ), Scotoplanes (type 
S. globosa ), Kolga (type K. hyalina), Peniagone (type P. wyvillei ), 
Scotoanassa (type S. diciphana ), Achlyonice, and Eunypniastes ; 
Herouard (127) p. 35. 
Eunypniastes, vide sub Elpidinae. 
Euphronicles talismani, descr.; Herouard (127) p. 30, pi. ii. 
Eupyrgus scaber ; Alcock (5) p. 290. 
Herpysidia is syn. of Bathyplotes, q. v.; Herouard (124). 
Holothuria, sp.; Bell (17) p. 215. H. arenicola\ Clark (48) p. 528. 
H. atral ; Clark (48) p. 530: Voeltzkow (289) p. 565. H. forskali, 
inch H. catanensis, cuvierian organs; Barthels (14). H. frequentia- 
mensis n. sp. [melius frequentimensai], Clipperton Id. (p. 530), H.fusco- 
rubra { p. 527); Clark (48). H. helleri, cuvierian organs; Barthels 
(14). H'. impatiens ; Clark (48) p. 528: cuvierian organs; Barthels 
(14). H. marenzelleri ; Clark (48) p. 528. H. mexicana, colour in 
life, young; Herouard (127) p. 7, pi. i. H. nigra, see ii, d, viii, b; 
Borradaile (27) p. 200. H. pardalis-, Voeltzkow (289) p. 565. 
H. polii, spicules descr.; Herouard (127) p. 7, pi. i. H. ratlibuni\ 
Verrill (285) p. 37, pi. i. H. stellati ; Herouard (127) p. 7: move¬ 
ment of spermatozoa; Buller (38) p. 151. H. tremula is a Stichopus 
apud Ostergren and inch S. richardi ; Perrier (221). H. tubulosa; 
Fredericq (85): Herouard (127) p. 7: n, c, vii; Przibram (228). 
H. verrilli ; Richard (238) p. 83: made a var. of H. intestinalis, and 
referred to n. g. Allantis ; Herouard (127) p. 21. 
1902. [Vol. xxxix.] 
E 24 
