MANUAL OF THE MOLLUSCA. 



[Tamil Y Yolutid^] 



Contains Coltimbellin'A (p. 227), Mitra {Imbricaria, Cylmdra, 

 SfrigatelJa, and IJyalina) (p. 231), V oiajt A {Vol utilithes, Bcaphella, 

 Volutomitra, and Mela) (p. 230), Cymba (p. 231), Marginella 

 (p. 232), Volvaria (p. 232), and 



Lyrla, Gray, 1847. 



Synonyms, Harpella, Gray; Enseta, Gray, 



Types, L. deliciosa, Montf. ; L. liarjDa, 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 the inner lip provided with a large number 

 of short cross-plaits. Operculum ovate-elongate, thin ; corneous 

 nucleus at first nearly central, at a more advanced age sub- 

 apical. 



Distribution, 14 species. Pacific Ocean, America, Madagascar, 

 Australia, Japan, New Caledonia, Antilles. 



Fossil, 3 species. Cretaceous. India. The species in the 

 Tertiary strata have not been distinguished from Voluta. 



Cystiscus, Stimpson, 1865. 



Type, 0. capensis, Cape of Good Hope. 



Shell resembling that of Marginella; small, thin, ovate, 

 inflated, smooth, and polished ; ajDcrture 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 Miirex, thick and strong, with seven unequal conical 

 denticles. 



[Family Cyprjeid^] 



Includes Erato, Cypr^ea [Cyprovula, Luponia, and Trivia), 

 Ovula {Volva and Badiiis), Pachybathron, Pedicularia, and 

 Dentiora, Pease, 1862. 



Type, D. rubida. Sandwich Islands. 



Shell differs from that of Pedicularia in the flat or excavated 

 columella, compressed, and tootJied. 

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