58 Moll. 
MOLLUSCA. 
Species of Chitonidce found in deep water on the American Coast, 
enumerated by W. Dali, P. U. S. Nat. Mus. iv. pp. 410 & 411, and Ann. 
N. H. (5) x. p. 23. 
Chiton rarinota , sp. n , Jeffreys, P. Z. S. 1882, p. 6G8, Atlantic, ‘Por- 
cupine’ Expedition. 
Placophora ( Euplacophora ) ailantica , sp. n., Verrill & Smith, Am. J. Sci. 
(3) xxiv. p. 365, South Coast of New England. 
[SOLENOGASTRA.] 
A. A. W. Hubrecht gives a brief account of the organization of Neo- 
menia, Proneomenia , and Chet tod erma compared with that of Chiton and 
Chitonellus , with several diagrammatic figures; Q. J. Micr. Sci. xxii. 
pp. 212-218. 
Neomenia. Kowalewsky & Marion, in a preliminary account of their 
researches upon this genus, express an opinion that what has been 
hitherto considered as the hinder end is really the anterior, and what has 
been described as the penis is the radula ; Zool. Anz. 1882, pp. 61-64. 
Hubrecht opposes this view, and thinks that the animals observed by the 
two authors belong to the genus Proneomenia , not to Neomenia ; tom. cit. 
pp. 84-86, also in Arch. Z. exp^r. x. pp. xxxiii -xxxvii. 
Neomenia coralliophila , sp. n., described by A. KowaleWsky, Nachr. 
Ges. Mosc. xliii. 
Proneomenia. Note by Hubrecht, Rep. Brit. Ass., 51st meeting, p. 673. 
TEC TIB BA N CHI A . 
ACT,EONID2E. 
Actceon nitidus, sp. n., = Auriculina insculpta (Verrill, 1880, nec Mon- 
tagu, sp.), Verrill, Tr. Conn. Ac. v. p. 540, pi. lviii. fig. 21, South of 
Martha’s Vineyard, South Coast of New England, 312-487 fath. 
Actceon giganteus , sp. n., Hunker, Moll. Jap. p. 160, pi. ii. figs. 8 & 9, 
Japan. 
Buccinulus fraterculue , sp. n., id. 1. c. p. 161, pi. xiii. figs. 21-23, 
Japan. 
Ringicula cabrai, Red Sea ?, senegalensis , Coast of Senegal, 72 metres, 
admirabilis and schlumbergeri , Mediterranean, spp. mi., Morlet, J. de 
Conch, xxx. pp. 201-204, pi. ix. figs. 1-4. 
Choristid^j. 
Choristes elegans (Carpenter, 1872, post-pliocene fossil in Canada), 
found in the recent state off Martha’s Vineyard, South Coast of New 
England, 255 fath. Verrill proposes a new family for it, characterized by 
the heliciform shell, . with the periostracum continuous between the 
whorls ; lip continuous, columella without a fold ; operculum paucispiral. 
Animal with frontal tentacles united by a fold and with simple posterior 
