174 ZON1TES. 



more convex base arid subperforate umbilicus, and probably only 

 a variety of that species. It is H. nitida, Fab. 



II. UPSONII, Calkins. = Vertigo ovata, Say. 



4v *** W es t Indian, Central and South American Species. 

 <X X II. GUNDLACHT, Pfr. PI. 53, figs. 44, 45, 41-43. 



Subperforate, depressed conic, rather solid, pale rusty brown, 

 minutely striated; whorls 5, narrow, with deep suture, periphery 

 rounded, base convex, excavated around the very small perfora- 

 tion. Diam. 2*5 mill. 



Cuba, St. Thomas, Porto Eico, Vicque, 



Guadeloupe, Florida, Nicaragua. 



It is H. egena of Gould (not Say), and H. pusilla (Pfr. not 

 Lowe). 



II. DIOSCORICOLA, C. B. Adams. PL 53, tigs. 46, 47. 



Shell subperforate, turbinately-globose, thin, very minutely 

 striate, corneous ; whorls 3-3J, convex, the last subimpressed in 

 the middle, columella subvertically descending, very shortly 

 reflected. Diam. 1'75 mill. 



Jamaica , Vicq no. 

 H. EPISTYLIULUM, C. B. Adams. PI. 53, fig. 48. 



Perforate, somewhat solid, striulate, white ; whorls 7, a little 

 convex, narrow, periphery subangulate, base planate. 



Diam. 4-3 mill. 



Jamaica. 

 II. SIMULANS, C. B. Adams. PL 53, figs. 49, 50. 



Subperforate, thin, shining, lightly decussated, pellucid, fulv- 

 ous ; whorls 4J, a little convex, periphery subangr.luted, base 

 convex. Diam. 3*25 mill. 



Jamaica. 

 II. PLAGIOPTYCHA, Shuttlew. PL 53, fig. 51. 



Perforate, decussated obliquely by costukite-strirc and thin 

 incremental lamellae, corneous, wax} 7 , subpellucid ; whorls 4, very 

 convex, the last subinflated, suture profound. Diam. 3 mill. 



Porto Rico and Vicque. 



H. GUATEMALENSIS, Crosse and Fischer. PL 53, fig. 52. 



Subperforate , thin, translucent, with numerous, regular, oblique 





