100 
The entire surface of this shell is sculptured longitudinally with 
very closely-packed crinkled strize. 
15. Butimus primuLaris. Bul. testd acuminato-ovatd, tenui- 
culd, subventricosd, umbilicatd, anfractibus septem, levibus, 
columelld tenui reflexd, labro simplici; albidd, basin versus 
vivide luted, fasciis castaneo-nigris quatuor aut pluribus, non- 
nullis maltd interruptis, cingulatd. 
Hab. Chachapoyas, Alto Peru; W. Lobb. 
Of simple structure, but abundantly characterized by its bright 
primrose colour and dark basal bands. ‘ 
16. Bunimus cotumetuaris. Bul. testd cylindraceo-elongatd, 
haud umbilicatd, anfractibus septemdecim ad octodecim, planis, 
angustis, oblique subobsoleté striatis, anfractu ultimo ad basin 
subangulato, columella tortuosd, leviter recedente, apeyturd sub- 
quadratd, ad basin effusd ; roseo-albicante, apicem versus livido- 
cerulescente et rufescente. 
Hab. Andes of Caxamarca, Peru (under stones at an elevation of 
12,000 feet); W. Lobb. 
An interesting Pupa-like 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. Lucia. By Lieut. Tyuer, 
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 “ Cowresse,”’ the * Clibro,” and 
the “ Téte Chien;”’ and in this order I propose to give you, as I 
promised, a short description of each. I 
1. CRASPEDOCEPHALUS ATROX, Gray. The Rat-tail Serpent. 
