104 TEINOSTOMA. 



T. PUNCTATTTM, Jousseauiiie. PL 3-4, figs. 48, 49. 



Depressed convex, solid, subtrauslucent, yellowish white, more 

 flattened below, umbilicns almost covered, surface covered *by mi- 

 croscopic, close granular spiral stride, more apparent at the suture 

 and around the umbilicus. Diam. 2'o mill. 



Prince's Isl. W. Africa. 



T. MoRLiERi, Jousseaume. PI. 34, figs. 50, 51. 



Subopaque, milk-white, slightly convex above, nearly flat lieloAv, 

 umbilicus almost completely covered, suture narrow-margined^ 

 surface microscopically spirally striate. Diam. 3'5 mill. 



Martinique. 



In this species the heavy umbilical callus joins at a somewhat 

 acute angle with the cclumellar lij), of which it is an extension, the 

 angle forming a pit. 



T. LUCiDUM, A. Adams. PI. 35, figs. 58, 59. 



Depressed orbicular, smooth, white, spire enveloped with callus, 

 umbilicus covered by a heavy, convex callous deposit, aperture a 

 little oblique. Diam. 1"5 mill. Japan. 



T. AMPLECTANS, Carpenter. PI. 35, figs. 60, (U. 



Depressed-convex, white, whorls very rapidly increasing, spire 

 small, last whorl large, oblique, periphery subangulated, aperture 

 subtriangular, umbilical region covered by a large callus. 



Diam. 2"5 mill. Mazatlan. 



T. SUBSTEIATUM, Carp. PI. 35, figs. 62, 63. 



Shining, smooth, white, very minutely impressly striated near the 

 suture, callus strong,convex, narrow, coiling round the umbilical 

 fissure, lip thick. Diam. 2 mill. Mazatlan. 



T. DiAPHANUM, d'Orb. PI. 35, figs. 64, 65. . 



Depressed orbicular, thin, diaphanous, vitreous, smooth, shining, 

 white, umbilicus slightly callous, whorls convex, rather slowly in- 

 creasing. Diam. 1'5 mill. 



St. Thomas, W. I. 



T. CARiNATUM, d'Orb. PI. 35, figs. 66, 67. 



Depressed convex, lenticular, periphery strongly carinated, the 

 carina forming a sutural margin above, smooth, thin, dia})hanous 

 white, umbilicus minutely callous. Diam. 1"5 mill. 



St. Thomas, W. L 



