40. _ CocuircopaA. Fer. 
(Acuarina. Lam.) 
Oviform or turreted ; Columella solid, flat, 
thin, transparent; mouth truncated, and arched at 
narrow. the base. 
a Polyphemus, Montf. Oviform ; mouth long; outer lip vertical. Pl. 8, 
fig. 22. 
6 Styloides. Columna, Perry. Turreted; mouth short; outer lip a little 
advanced, Pl. 8, fig. 19. 
41. Cocnytcrrra. Fer. 
(Burmus. Brug,) 
Conical or turreted; — Columella twisted and 
perforated ; whorls nearly hollow. 
equal, or the last shorter 
than all the others toge- 
ther. PI. 6, fig. 38. 
42. Cocutocena. Fer. 
(Auricuta. Lam. Butt- 
mus. Lam.) 
Oblong or oviform ; last Columella hollow, 
whorl of the spire gene- twisted, straight, perfo- 
rally longer and larger rated, umbilicate. 
than all the others toge- 
ther; mouth elongated. : 
a Umbilicate. Columella straight. Pl. 8, fig. 20. 
» | Raliorakee, Leach, } Columella twisted. Pl. 6, fig. 28. 
ec Lomastome. Bulimus, Lam. Columella twisted; peristoma reflected. 
Pl. 6, fig. 27. 
d Helicteres. Turbo, Chemn. Mouth short, crescent-shaped. Pl. 12, fig. 15. 
e Stomotoides. Auricula, Zam. Mouth elongated, angular at its extremi- 
ties, or effusive in the upper part ; peristoma thickened and reflected ; 
columella large, more or less spiral, sometimes forming a fold in 
the mouth. Pl. 6, fig. 22, 34. 
f Dontostomex. Mouth crescent-shaped ; peristoma margined, a little re- 
flected ; columella twisted, hollowed, flattened at the base, or forming 
a protuberance; often perforated. Pl. 8, fig. 23. 
43. Cocutoponta. Fer. 
(Pura. Lam. Onosro- 
mia. Fleming.) 
Cylindrical orfusiform ; Columella solid or 
whorls equal, numerous. nearly hollow. 
narrow: mouth short, al- 
most as broad as deep in 
the direction of the axis ; 
several inner teeth or thin 
plates: peristoma reflected. 
« Pupa, Lam. Cylindrical, Pl. 6, fig. 34, 37 ; pl. 8, fig. 32. 
6 Chondrus, Cuv, Fusiform. Pl. 8, fig. 25 ; pl. 13, fig. 12, 
