164 VOLUTINiE. 



reticulata, Reeve. volva, Chem. 



Turneri, Gray. zebra, Leach. 



undulata, Lam. 



Sub-gen. alcithoe, H. and A. Adams. 



Shell ovately fusiform ; spire produced, apex papillary; aper- 

 ture ovate, wide; inner lip with a spreading callus; outer lip 

 dilated, subreflexed. 



fulgetrum, Brod. megaspira, Soiv. 



fusiformis. Swains. . Pacifica, Soland. 

 fusus, Quoij and Gaim. papillaris, Swains. 



gracilis, Swains. tuberculata, Swains. 



Genus VOLUTA, Linnaeus. 



Shell ovate, sub-conical, solid ; spire short, apex papil- 

 lary, whorls nodose, the last longitudinally plicate; aper- 

 ture oblong; columella straight, with a thick callus, 

 transversely plicate, plaits numerous, the anterior the 

 largest; outer lip thickened, somewhat reflected. 



Syn. Lyra, Linn., not Griff. Plejona, Bolt. Musica, 

 Humph. 



Ex. V. musica, Linn<BUS, pi. 18, fig. 4. 



In this genus the species are ornamented with trans- 

 verse interrupted bands and striae ; the shells are dense, 

 and the plaits on the columella are numerous and well 

 developed. Dr. Gray states it to possess a moderately- 

 sized operculum. 



