504 
ZOOLOGICAL LITISRATUKE. 
Dr. Alcock, illustrated by a bad woodcut, appears iu Proc. Lit. & Phil. Soc. 
Liverpool, vol. vi. 1867, pp. 26, 26. Dr. Alcock does not refer to Mr. Stewart’s 
paper on the structure of Echinoderms, Proc. Zool. Soc. 1861, pp. 63-58. 
Cassidulidce. 
Anochanus is the name of a new genus established by Dr. E. Grube for a 
little sea-urchin, closely resembling in external appearance NticleoUtes (JEchi- 
nobrissus) ejngonus, Martens, but containing no genital openings or madreporic 
tubercle on the antambulacral surface ; there is here, however, an orifice of 
considerable size, concealed by overlying spines, which leads into a sac not 
apparently communicating with the body-cavity, in which sac a number 
of small sea-urchins, provided with test-spines and feet, and of a diameter 
one-tenth that of the parent, were found. These young do not present any 
complete agreement with the parent, wanting the apical orifice and pit for 
the anus. [It is not stated whether the eye-plates are also absent in the 
large specimen examined, nor is it distinctly stated that the genital plates 
are absent in the young forms found in the sac above mentioned.] This form 
is believed to be from the Chinese Sea, and is provisionally called A. sinensis' 
Palceostomidee. 
Leskia mirabilis, Gray. The name Leskia Dr. Gray proposes to change to 
Palceostoma, as that of Leskia is already in use for a genus of mosses, and for 
one of Diptera. As-d^as been seen (Zool. Record, 1867, p. 662), Lov^n pro- 
poses the name Palmostomata for the new section of Echinodermata to which 
Leskia mirabilis belongs. See a note by E. Billings, affixed to a reprint from 
the ‘ Geological Magazine ’ of Liitken’s abstract of Lov^n’s paper, in the 
‘Canadian Naturalist ’ for December 1868, pp. 442-446, on the mouth of the 
Cystideans. 
Holothurioidea. 
Pneumonopiiora. 
Aspidochirotida. 
Llolothuria natans, sp. n., Sars, 1. c. p. 20, 250 to 800 fathoms, Skraaven. 
Holotkuria affinis^ sp. u., Heller, 1. e. p. 73, Taf. 3. fig. 7, licsina. 
llolothuria chilemis, sp. n.. Semper, /. c. p. 249, Taf. 40. fig. 2, Chili ; //. 
discrepansj sp. n.. Semper, 1. c. p. 261, Taf. 40. fig. 7, Samoa Islands j H. 
inornata^ sp. n., Semper, 1. c. p. 262, Taf. 40. fig. 1, Mazatlan. 
Stichoptcs mobii, sp. n.. Semper, 1. c. p. 246, Taf. 40. fig. 11, West Indies. 
The following difierences are pointed out between some closely related species 
of this genus : — 
'Large, single-pointed, stool-shaped bodies (Siiihlchen) 
present S. godeffroyi^ Sem. 
Large, single-pointed, stool-shaped bodies (Stiihlchen) 
wanting S. yodeffroyi, var. pygmceus. 
Large, single-pointed, stool-like bodies present. 
Interradial dorsal papillas numerous. 
8. godeffroyij var. b. 
Only four rows of radial dorsal papillae. 
S. horrens, Selenka. 
Large, single-pointed, stool-like bodies wanting, and in- 
stead somewhat smaller, many-pointed, stool-like 
bodies .... S. variegaius^ Sem. 
0-formed bodies 
wanting. 
C-formed bodies 
present. 
