100 



The entire surface of this shell is sculptured longitudinally with 

 very closely-packed crinkled striae. 



15. BuLiMUS PRiMULARis. Bul. testd acuminato-ovatd, tenui- 

 culd, subventricosd, umbilicatd, anfractibus septem, IcBvibus, 

 columelld temii refiexd, labro simplici ; albidd, basin versus 

 vivide luted, fasciis castaneo-nigris quatuor aut pluribus, non- 

 nullis malth interruptis, cingulatd. 



Hab. Chachapoyas, Alto Peru ; W. Lobb. 



Of simple structure, but abundantly characterized by its bright 

 primrose colour and dark basal bands. 



16. BuLiMUS coLUMELLARis. Bul. testd cyUndraceo-elongatd, 

 hand umbilicatd, anfractibus septemdecim ad octodecim, planis, 

 angustis, oblique subobsolete striatis, anfractu ultimo ad basin 

 subangulato, columelld tortuosd, leviter recedente, apci'turd sub- 

 quadratd, ad basin effusd ; roseo-albicante, apicem versus livido- 

 ccerulescente et rufoscente. 



Hab. Andes of Caxamarca, Peru (mider stones at an elevation of 

 12,000 feet); W. Lobb. 



An interesting Ptipa-Yike species, distinguished by its square effuse 

 aperture and erect columnar form. 



July 24, 1849. 

 John Edward Gray, Esq., F.R.S., in the Chair. 



The following papers were read : — 



1. Notes on the Serpents of St. Ltjcia. By Lieut. Tyler, 

 R.E. Communicated by the Secretary. 



Of the snakes of the island of St. Lucia, the most numerous species 

 is the "Rat-tail;" then follow the " Couresse," the " Clibro," and 

 the " Tete Chien ; " and in this order I propose to give you, as I 

 promised, a short description of each. 



1 . Craspedocephalus atrox, Gray. The Rat-tail Serpent. 



