gastropoda (rhipidoglossa, docoglossa). Moll. 55 
hanleyana , sp. n., p. 26, pi. ccccxxxi. fig. 28, locality unknown, alternata 
sp.n., p.23, pi. ccccxxxv. fig. 51, Malta, Gibraltar, Mozambique \f\grayana 
new name for marmorata (Gray, nec Linn.), p. 20, pi. ccccxxxviii. fig. 87, 
pi. ccccxl. b, fig. Ill, locality unknown, echinata , sp. n., p. 18, pi. ccccxl. 5, 
fig. 124, locality unknown ; the last, according to the author himself, quite 
possibly the unworn young state of II. gigantea . 
Haliotis exigua (Dkr.), Dunker, Moll. Jap. p. 148, pi. vi. figs. 8-10, 
Japan. 
Fissurellid.®. 
Emarginula multistriata , sp. n., Jeffreys, Ann. N. H. (5) x. p. 30, Medi- 
terranean, 217 fath., and Western Coast of Spain, 292-374 fath. 
Puncturella (Lowe), Cranopsis (A. Ad.), liimula (Defr.), and Semperia 
(Crosse), differentiated by P. Fischer, J. de Conch, xxx. p. 278. 
Puncturella clathrata , sp. n., and profundi (Jeffr., 1877), Atlantic, 
‘Porcupine’ Expedition, Jeffreys, P. Z. S. 1882, pp. 675 & 676, pi. 1. 
figs. 10 & 11. 
Rimula asturiana , sp. n., Fischer, Rapp. Faune sous-marine, p. 43, and 
J. de Conch, xxx. p. 51, Gulf of Gascony, 1107-2018 metres ; identified 
with Puncturella ( Cranopsis ) crabicia (Fischer) by Jeffreys & Watson, 
l. c. p. 277. 
Fissurisepta granulosa , sp. n., Jeffreys, P. Z. S. 1882, p. 675, pi. l.fig. 9, 
Atlantic, ‘ Porcupine ’ Expedition. 
Fissurella tanneri , sp. n., Verrill, P. U. S. Nat. Mus. v. p. 333, off Dela- 
ware Bay, 104 fath. 
Fissurella melvilli , sp. n., Sowerby, P. Z. S. 1882, p. 120, pi. v. fig. 11, 
locality unknown. 
Cocculina , g. n. Shell resembling that of Patella , but no eyes, only 
one asymmetrical gill ; dentition closely resembling that of Parmophorus 
and Helicina ; the internal and external anatomy also present a curious 
mingling of features supposed “ to be characteristic of the Docoglossa and 
the Rhipidoglossa.” C. rathbuni and beani , spp. nn., off Martha’s Vine- 
yard, South Coast of New England, 100-416 fath., also off the West 
Indies, 399-502 fath., ‘Porcupine,’ Expedition, Dali, P. U. S. Nat. Mus. 
iv. p. 402, and v. p. 334 ; Ann. N. H. (5) x. pp. 12-16 ; also Verrill, Tr. 
Conn. Ac. v. p. 533. The author proposes a new family, Cocculinidce , 
for it. 
Cocculina spinigera , sp. n., Jeffreys, P. Z. S. 1882, p. 683, between the 
Hebrides and Faeroes, 516 fath., commensal with Idas argenteus ondeserted 
tubes of Teredo. 
DOCOGLOSSA ( OYOLOBRANOEIA ). 
W. H. Dall treats on the dentition of this Order generally, taking as 
typical that of the Patellidcc, with three lateral and three marginal plates 
on each side ; this number is reduced in the Acmaddce and Lepetidce either 
by suppression or coalescence of some plates, so that the three lateral plates 
seem to be soldered into one in Pectinodonta , and even those of both 
