TEINOSTOMA. 105 



T. soLiDUM, E. A. Smith. PI. 35, fig. 68. 



Shell solid, small, light fulvous, smooth ; whorls 4, rapidl}' increas- 

 ing, the last smooth above, base flattened, with three exterior sjiiral 

 sulci, umbilical region callous ; peristome receding at the base. 



Diam. 3-3 mill. Whydah, W. Africa. 



Unfigured Species. 



T. Carbonnieri, T, Deschampse, T. rhinoceras, Jousseaume. 



Aden. 



Section Calceolina, A. Ad. 1863. 

 T. pusiLLUM, C. B. Ad. PI. 35, figs. 69, 70. 



Orbicular-depressed, very minutely striated, suture impressed, 

 last whorl large, aperture widely lunate, columellar lip septiform, 

 with straight margin, whence a wide callus spreads over the umbili- 

 cus. Diam. 1*5 mill. 



Jamaica, Jajxm (A. Adams). 



This species, figured from Japanese S2:)ecimens, is said by A- 

 Adams to be identical with the above named Jamaica species; I 

 have no means of verifying this. T. anomalum, H. and A. Adams is 

 a synonym. 



Subgenus Pseudorotella, Fischer, 1857. 



T. semistriata, d'Orb. PI. 35, figs. 71-73. 



Orbicularly depressed, thin, diaphanous whitish, closely, minutely 

 spirally striate above, smooth below, with a somewhat flat, shining, 

 transparent umbilical callus; whorls 4, slightly convex, slowly in- 

 creasing, peristome thickened. Diam. 1*5 mill. 



Cuba. 



Subgenus Discopsis, Folin, 1869. 



T. OMALOs, Folin. PI. 35, fig. 74. 



Shell much depressed, disk-like, thin, diaphanous, vitreous, shin- 

 ing, almost plane above; whorls 3, rapidly increasing, the last whorl 

 spirally tri-lirate, widely cristate at the periphery, base slightly con- 

 vex, umbilicated, aperture large, oblique, subti'iangular, peristome 

 acute, left margin a little reflected, separating into a thickened 

 tongue-like projection at the base. Diam. 1"7 mill. 



Pointe a Pitre, Guadeloupe, W. I. 



