GENUS XXIII. lOLUTA. 107 



other genvis of Univalves contains several species that have 

 teeth on the pillar lip, this becomes very indeterminate and un- 

 certain. Many of the Buccina in Liunaivis's second division, 

 as tuberosum, l^esticidus, &c. have very conspicuous teeth on 

 the pillar : so also have some of the Strombi, as Chiragra, &c. ; 

 and raany among the Murices, as Tritonis, Ttilipa, &c. ; also 

 several among the Trooki, as dolabratus ; and Turbo, as Uva ; 

 also Helix, as Scorabeeus ; and Nerita, as grossa, &c. 



There are not many of the animals known, but the few that 

 are, vary very considerably fiom one another (see Adanson). 



The lines and marks are denominated the same as in other 

 spiral shells. 



Linneeus describes 46 species, Gmelin has added 96, Dr. 

 Turton 2. Total, 144. 



Linnaeus makes five divisions. 



The 1st, Apertura integra, 



2nd, Cylindroidece, 4th, Fusiformes, 



Srd, Otatcc, 5th, Ventricosce. 



Perhaps the last division may not improperly be considered 

 as the true Valuta. They seem to be sufficiently different from 

 the rest, and from every other genus, to be esteemed a genus of 

 themselves : in these the pillar is twisted with oblique folds ; the 

 last whorl is very large, bearing no proportion to the others; the 

 aperture broad, with a hollow at the end forthest from the spire ; 

 (Outer lip thin, margin acute ; spire often covered, or nearly so, 

 with the outer whorl. The animal is very remarkable ; the foot 

 is so large, that the shell covers only about one-fourth part of 



p2 



