;^-v 38 '.,- ~~ff 



CONUS SAURIDENS. Tab. 16, fig. 7. 



Thin and fragile, smooth, with impressed spiral striae at base; 

 sides straight; spire short, slightly concave, with spiral striae; 

 suture cariuated ; shoulder angulated ; columella folded at base. 



Locality. Claiborne, Alab. 



Rather rare, and remarkable for the tenuity of the shell and 

 the fold on the columella. No. 3, first ed. p. 33. 



ROSTELLARIA VELATA. Tab. 15, fig. 4.* 



Fusiform, with longitudinal curved ribs and spiral striae, but 

 coated more or less with a smooth polished calcareous deposit, 

 bounded by a deep groove running on the spire and returning 

 towards the base ; labnim not expanded ; margin thick and reflect- 

 ed ; beak and spire prolonged and attenuated. 



Locality. Claiborne, Alab, 



Syn. R. LAMARCKII, Lea, Con. p. 158, pi. 5, /. 1C4. 



This curious species is very abundant. Young shells are desti- 

 tute of the tunic and the margin of the labrum is thin and not re- 

 flected. No. 3, first ed. p. 31. 



ROSTELLARIA LAQUEATA. Tab. 15, fig, 6f. 



Subfusiform, with acute longitudinal slightly curved plicae on 

 the superior half of each whorl ; whorls slightly convex, with fine 

 spiral striae ; labium thickened and reflected, the callus continued 

 on the spire ; labrum thick, margin acute, biangulated inferiorly ; 

 base with strong spiral striae ; truncated. 



.Syn. R. CUVIERI, Lea, Con. p. 1GO, pi. 5, /. 165. 



Locality. Claiborne, Alab. 



This species is very abundant. No. 4, first ed. p. 41. 



PYRULA TRICARINATA. Tab. 15, fig. 6. 

 Subfusiform ; reticulated ;tricarinated ; spire elevated and point- 



"Misprint for "Jig. 5." G. I). II. 

 {Misprint for "/</. 4." G. D. H. 



[94] 



