TUEBONILLA. 331 



minute spiral stria?, this species is perhaps the same as the 

 preceding." 



T. AMERICANA, d'Orb. PL 76, fig. 16. 



Thin, white, coarsely longitudinally costate, with intercostal 

 spiral striaj ; whorls 9, convex, with a small deep-seated colu- 

 mellar plication. Length, 3 mill. 



Rio Janeiro, Brazil to San Bias, Patagonia. 



The figure does not show the plication, which must be small 

 and obscure. 



T. PUNCTA, C. B. Adams. PL 76, fig. 1. 



White; whorls 10-11, besides the nucleus, scarcely convex, 

 with distinct suture ; white, with about 26-30 rather prominent 

 longitudinal ribs, not produced below the periphery of the last 

 whorl, and numerous crowded intercostal striae, one of which , 

 stria; a little above the middle of the whorls and another along 

 the suture are wide and deep, resembling spiral series of 



punctures. Length, 5-5 mill. 



Jamaica, St. Thomas. 



T. SUBULATA, C. B. Adams. PL 76, fig. 23. 



White, or pale brownish white, with two spiral bands of pale 

 wax-color, and a third on the lower part of the body-whorl; 

 whorls 10, rather convex, with well impressed suture, with 28-30 

 slender prominent longitudinal ribs, not quite obsolete below the 

 periphery, and very fine spiral stria3 between the costae and 

 anteriorly, the one next the suture larger. Length, 4'25 mill. 



Jamaica, St. Thomas. 



T. FLAVOCINCTA, C. B. Adams. PL 76, fig. 24. 



White, with a broad yellowish brown sutural band; whorls 

 8-9, besides the nucleus, slightly convex below the middle, a 

 little shouldered, with distinct suture ; with about 28 rgunded, 

 slender ribs, becoming obsolete anteriorly, and very minute 

 spiral striae intercostal and anterior. Length, 3'5 mill. 



Jamaica, St. Thomas, Guadeloupe. 



T. FASCIATA, d'Orb. PL 76, fig. 25. 



Thin, white, with a broad chestnut subcentral band; whorls 

 9, gradate, with deep suture; longitudinally costate, the ribs 



