3) 
proposed by the authors of this communication ; to the other sub- 
family the following genera will appertain, viz. Melampus, Tralia, 
Ophicardelus, Laimodonta, Marinula, Leuconia, Pedipes, and Otina. 
The last-mentioned genus, according to the observations of Dr. Gray*, 
only seems to differ from Pedipes in the shell beg ear-shaped and 
not supplied with tooth-like plaits. In the present as in former com- 
munications, the authors have endeavoured to arrange the synonymy 
and indicate the generic position of the numerous species of Auricu- 
lide. 
Genus CassipuLA, Férussac. 
Shell oval, subconic, solid; spire short, obtuse ; aperture narrow, 
longitudinal; inner lip plicate anteriorly, thickened and reflected; outer 
lip reflected, with an internal marginal callus, sinuated posteriorly. 
Sidula, Gray ; Detracia, Gray ; Rhodostoma, Swainson. 
1. CasstpuLA correA, Chemnitz. 
Voluta coffea, Chemn. (not Linn.) ix. p. 45. t. 121. f. 1043, 1044. 
—Bulimus auris-felis, Brug. Dict. no. 77; Encyecl. Méth. Vers, 
p. 343.—Auricula felis, Lamk. Hist. viii. p. 326.—Cassidula Chem- 
nitzii, Beck, Ind. Moll. 
2. CASSIDULA NUCLEUS, Gmelin. 
Helix nucleus, Gmelin, Syst. Nat., p. 3651. no. 255.—Auricula nu- 
cleus, Martyn, Univ. Conch. t.67; Lamk. Hist. viii. p. 335. no. 21.— 
Conovulus nucleus, Féruss. Prodr. p. 195. no. 26. 
3. CassipuLA Krauss, Kiister. 
Auricula Kraussii, Kist. Chemn. Conch. Cab. (Auriculacea) p. 24. 
t. 3. f. 6-8: 
4, CASsIDULA MUSTELINA, Deshayes. 
Auricula mustelina, Desh. Encycl. Méth. Vers, ii. p. 92. no. 14. 
5. CassipULA RUGATA, Menke. 
Auricula rugata, Menke, Moll. Nov. Holland. p. 7. no. 15. 
6. CasstpuLA CumINGIANA, Recluz. 
Conovulus Cumingianus, Recluz, Ann. and Mag. Nat. Hist. 
vol. xvii. p. 295 (1846). 
7. CASSIDULA ANGULIFERA, Petit. 
Auricula angulifera, Petit, Rev. Zool. vol. iv. p. 101; Menke, 
Moll. Nov. Holland. p. 8. no. 16. 
8. CAssIDULA DOLIOLUM, Petit. 
Auricula doliolum, Petit, Proc. Zool. Soc. December 1842; Ann. 
and Mag. Nat. Hist. vol. xii. p. 347. 
9. CasstpULA SuULCULOSA, Mousson. 
Auricula sulculosa, Mouss. Land- und Siisswass. Moll. v. Java, 
p. 45. pl. 5. f. 9. 
* Ann. and Mag. Nat. Hist. January 1854, p. 74. 
