LAMELLIBRANCHIA. 
183 
Venus (^Gomphina) nielancegis (Romer), from Yeddo ; Lischke, 1. c. 
p. 86, pi. vii. figs. 10 & 11. 
Venerupis (Lam.). Monograph by Sowerby in Reeve’s Conchologia 
Iconica, parts 318 & 319 ; 30 species, on 4 plates. V. attenuata, sp. n., 
fig. 7, locality unknown. 
Venerupis reflexa (Gray) = paupercula (Desh.), and V. elegans (Desh.) ; 
E. Smith, Moll. Voy. Ereb. & Terr. p. 6, pi. ii. figs. 3 & 6. 
PeTRICOLIDA']. 
/^etrieola (ritim.). Monograph by Sowerby, L c. ; 21 species, on 3. 
plates. P. incerta, fig. 10, and wquistriata, fig. 19, spp. nil., locality un- 
known. 
GlAUCONOMID/E. 
Glauconoma isseliana\_-nu7n'], sp. n., Tapparone-Canefri, Malac. viagg. 
Magenta, p. 130, pi. iii. fig. 2, Taku, China, in brackish water. 
CyRENIDiE. 
Corhicula Jluniinalis (Mull.) = consohrina (Cailliaud) = cor (Lam.) 
= saulcii (Bourg.) = crassula (Mouss.), several varieties fi*om Egypt, 
Jickeli, Verh. L. 0. Ak. xxxvii. pp. 283-287, pi. xi. figs. 4-9 ; from Syria, 
Martens, Vorderasiat. Conch, p. 37, pi. ix. figs. 56 & 57 ; and from 
Samarcand, id. in Fedchenko’s Turkest. Moll. p. 34, pi. ii. fig. 29. Mous- 
son treats C. jluminalis (Mull.), from the Tigris, and cor (Lam.), from 
the Euphrates, as distinct species, adding tigridis^ sp. n., Tigris ; J. de 
Conch, xxii. pp. 54 & 55. 
Corhicula radiata (Phil.), Sennaar, and (Phil.), Assuan, Sennaar, 
and White Nile, are distinct ; Jickeh, 1. c. pp. 287 & 288, pi. xi. figs. 10 
& 11 , 12 . 
Corhicula zelehoriy sp. n., id. 1. c. p. 290, pi. xi. fig. 13, Freshwater 
Channel, near Suez. 
Corhicula minima^ sp. n., Clessin, in Fedchenko’s Turkest. Moll. p. 35, 
pi. iii. fig. 30, Samarcand. 
Cyrena orientalis (Lam.) = Corhicula japonica (Prime), C. ohlonga 
(Quoy) belongs to the genus Glauconome ; Prime, Ann. Lyc. N. York, x. 
pp. 188 & 189. 
Leptosiphon, snb-g. n. of Cyrena., distinguished by rather short, narrow 
siphons, and a distinct, rather long and narrow, pallial sinus ; type, C. 
cnrolinensis (Bose.). Fischer, Ann. Lyc. N. York, x. pp. 191-194, & 195, 
pi. viii. figs. 1-4. 
Cyrenocapsa, sub-g. n. of Cyrena, distinguished by short, narrow 
siphons, and a rudimentary pallial sinus ; type, C. Jloridana (Conrad). 
Id. 1. c. pp. 194 & 195, pi. viii. figs. 5 & 6. 
These two sub-genera are peculiar to America; and the American 
species of Corhicula differ from those of the old world in having an 
evident pallial sinus ; id. 1. c. p. 196. ► 
Cyclas capensis (Krauss), from Abyssinia, and hartmanni, sp, n., from 
