STROPHOCHEILUS-DRYPTUS. 37 



S. GLOBOSUS Martens. PI. 2, figs. 2, 3. 



Shell imperforate, ovate-globose, solid, striatulate rather shining, 

 roseate under a yellow cuticle. Whorls 5, convex, joined by a 

 rather deep suture, the first and second smooth, forming an 

 extremely obtuse apex, the last inflated, slightly descending at 

 aperture. Aperture rather oblique, ovate ; peristome white, thick- 

 ened outside ; outer lip strongly arched, columellaalso arched, some- 

 what calloused, appressed outwardly, above broadened on the parietal 

 wall ; parietal callus thin, wide. Length 42, diam. 31 mill.; apert- 

 ture/length 28?, width including peristome 25, or inside peristome 

 17 mill. (Mart.). 



Habitat unknown. 



B. globosus MARTENS in Pfr., Monogr. viii, p. 17 ; Novit. Couch, 

 v, p. 24, pi. 140, f. 2, 3. 



Of this peculiar species but one example from Dohrn's collection 

 is before me. It reminds one of B. lichtensteini in form, but is com- 

 paratively shorter and rounder, the cuticle more shining, the deposit 

 on the parietal wall wider, especially below, where it is prolonged 

 over the umbilical tract. The first whorl is entirely flat, of the same 

 height as the second, on which bare traces of vertical stria? begin to 

 show ; but on the third whorl these are somewhat more distinct, 

 though remaining flat, never attaining the height and sharpness of 

 those of B. lichtensteini. Finally, on the penultimate and last 

 whorls they become closely crowded, flat, somewhat irregular wrinkle- 

 stria?, which at the suture are somewhat more elevated. The suture 

 is not deeply impressed, and falls only very moderately toward the 

 aperture. (Martens'). 



Subgenus DRYPTUS Albers, 1860. 



Dryptus ALB., Die Hel. 1860, p. 194, type Bulimus moritzianus 

 Pfr. ' 



Shell rather larr/e, ovate or elongated, unicolored dark brown or 

 zebra-striped, the surface comparatively smooth, not roughly malle- 

 ated or much wrinkled. Aperture ovate; peristome varying from 

 slightly expanded to reflexed and recurved. Columella slightly 

 convex above or with a stout fold. Type S. moritzianus Pfr. 



This group contains a few large species of Venezuela and Colombia, 

 not having the wrinkle-sculpture of Plekocheilus, the spiral lines of 

 Coniclus or the granulation of Eurytus. While a natural group, it 



