5); 44 ?-j?r 

 TURBINELLA PR^TENUIS. Tab. 17, fig. 1 



Pyriform, very thin, with revolving impressed lines, profound 

 at base ; whorls superiorly indented ; spire cancellated ; suture de- 

 fined by a prominent line ; apex papillated ; columella 6 to 6-plait- 

 ed ; plaits compressed ; base prolonged, slightly twisted, somewhat 

 attenuated. *^ 



Locality. Claiborne, Alab. 



This shell is evidently congeneric with T. pyruloides, which Mr 

 Lea absurdly refers to Valuta, whereas its characters are just the 

 reverse of those of the true Volutes, the folds decreasing in size 

 from above, as in Mitra, and the base canaliculate and not emar- 

 ginate. 



If these two shells will not agree either with the Turbinellcje or 

 Mitrce, they will form a new sub-genus, which might be termed 

 CARICELLA. 



CANCELLARIA GEMMATA. Tab. 16, fig. 10. 



Scalariform ; with longitudinal acute ribs which coronate the 

 whorls ; spire much elevated ; spiral lines obsolete ; columella con- 

 cave, 3-plaited ; umbilicus effuse, carinated on the margin ; labrum 

 obtusely reflected, striate within ; aperture subobovate. 



Syn. C. BABYLONICA, Lea, Con. p. 138, pi. 5, f. 134. 



Locality. . Claiborne, Alab. 



A beautiful species, remarkable in not being cancellated ; it is 

 not abundant but generally very perfect. No. 3, first ed. p. 35. 



CANCELLARIA ALVEATA. Tab. 16, fig. 19. 



Subfusiform ; turrited ; revolving lines fine but distinct ; whorls 

 obtusely angulated ; columella 3-plaited, labrum striate within. 



Syn. C. MULTIPLICATA, C. SCULPTURA, C. TESSELLATA, C. ELE- 



VATA, C. COST ATA, C. PARVA, Lea. Con. pi. 5, /. 135, 136, 138, 

 139, 140, 141. 



Locality. Claiborne, Alab. 



* This small species is readily distinguished from the preceding : 

 No. 4, first edition, p. 45. 



[100] 



