MANUAL OF THE MOLLUSCA. 
[Famity VoLuTIDz]| 
Contains CoLUMBELLINA (p. 227), Mirra (Imbricaria, Cylindra, 
Strigatelia, and Hyalina) (p. 231), VoLuTA ( Volutilithes, Scaphella, 
Volutomitra, and Melo) (p. 230), CyMBA (p. 231), MARGINELLA 
(p. 232), VoLVARIA (p. 2382), and 
Lyrtia, Gray, 1847. 
Synonyms, Harpella, Gray; Eneeta, Gray. 
Types, Li. deliciosa, Montf.; Ll. harpa, Barnes. 
Shell ovate oblong, mitriform, thick, sometimes longitudi- 
nally costated; aperture subovate, with a large number of 
columellar plaits, the two anterior of these being the strongest ; 
posterior portion of thé inner lip provided with a large number 
of short cross-plaits. Operculum ovate-elongate, thin ; corneous 
nucleus at first nearly central, at a more adyanced age sub- 
apical. 
Distribution, 14 species. Pacific Ocean, America, Madagascar, 
Australia, Japan, New Caledonia, Antilles. 
Fossil, 8 species. Cretaceous. India. The species in the 
Tertiary strata have not been distinguished from Voluta. 
OCystiscus, Stimpson, 1865. 
Type, C. capensis, Cape of Good Hope. 
Shell resembling that of Marginella; small, thin, ovate, 
inflated, smooth, and polished; aperture narrow, columella 
plaited. 
Animal with an elongated foot, truncated in front; head ob- 
long, depressed; tentacles triangular, flattened, and horizontal ; 
eyes at the lateral margins of the head, at the bases of the ten- 
tacles. Lingual dentition, 0°1:0, resembling the rhachidian 
teeth of Murex, thick and strong, with seven unequal conical 
denticles. 
[FAMILY CYPRAIDA] 
includes Hrato, Cyprma (Cyprovula, Luponia, and Trivia), 
OvULA (Volva and Radius), PACHYBATHRON, PEDICULARIA, and 
DENTIORA, Pease, 1862. 
T'yoe, D. rubida, Sandwich Islands. 
Shell differs from that of Pedicularia in the flat or excayated 
eolumella, compressed, and toothed. 
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