209 



habitat, their general form is very distinct, and would 

 more nearly resemble the G. Ovula, if the spire was 

 not produced. The surface of these shells has sel- 

 dom an epidermis, and is altogether or only partially 

 striated transversely ; they have on the columella one 

 or more thick, obtuse plaits: the shell is rolled round its 

 own axis, oval, cylindrical; aperture oblong, entire, right 

 edge sharp, spire elevated, and rather acute. 



Tornatella flammea Tornatella auricula 



solidula nitidula 



fasciata pedipes. 



PYRAMIDELLA. 



TROCHUS DOLABRATUS. Linn<BUS> 



Favanne, pi. 65, f. L. 



Lamarck is convinced, on an examination of these 

 shells, that they are marine and not terrestrial, though 

 different authors have not precisely determined their 

 habitat: (three only of the species described by La- 

 marck, are stated by him to inhabit the sea). Shell 

 subconical, turreted, without an epidermis; aperture se- 

 mioval, entire, outer lip sharp; the lower part of the 

 columella a little projecting, and subperforated at the 

 base, with three transverse plaits, 

 p 



