182 ZONITES. 



brown ; whorls 5, the last rounded at the base, aperture lunar- 

 circular. Diam. 6'5 mill. . ^. 



New Zealand. 



H. FULMINATA and H. HELMSI, Hutton (unfigured). New Zealand. 



Subgenus STENOPUS, Guilding, 1838. 



H. LIVIDA, Guilding. PL 54, fig. 16. 



Perforate, thin, striulate, brownish-corneous, diaphanous ; 

 whorls 6, a little convex, base more convex, periphery obtusely 

 carinated. Diam. 4'5 mill. 



Ins. St. Vincent, W. I.; Ins. Trinidad and Grenada,W. I. 



H. vacans, Guppy, from the latter locality, is a synoi^m. 



H. ANGASI, Tryon. PI. 54, fig. 17. 



Perforate, thin, shining, very finely obliquely striated, brown- 

 ish ash-color ; whorls 6^, convex, the last with a thread-like 

 peripheral keel, suture margined, base convex. Diam. 4 mill. 



Costa Rica. 



Described by Angas as S. Guildingi, a name preoccupied by 

 Bland. 



H. MICANS, Angas. PI. 54, fig. 22. 



Narrowly perforate, thin, shining, nearly smooth, light ful- 

 vous brown ; whorls 5, very slightly convex, suture, impressed, 

 periphery bluntly angled, base flatly convex, with just traces of 

 a very faint rudimentar}* keel between the umbilicus and per- 

 iphery. Diam. 4 mill. 



Costa Rica. 



H. GUILDTNGII, Bland. PI. 54, figs. 23-25. 



Narrowly perforate, depressed, thin, very lightly striulate, 

 polished, diaphanous, corneous amber-colored; whorls 4, rapidly 

 increasing, scarcely convex, lightl} 7 impressed and shortly 

 striate at the suture. Diam. 8 mill. 



Pto. Cabello, Venezuela. 

 H. CAYENNENSIS, Pfr. PI. 54, figs. 18-20. 



Widely umbilicated, discoidal, striulate, shining, corneous 

 yellow, spire subplanulate ; whorls 5, scarcely convex, the last 

 hardty dilated, not descending. Diam. 11 mill. 



Cayenne ; Moyobamba, Peru. 



