157 



end of last whorl appressed to preceding one. Height 0"8, greatest 

 breadth 0-97, least breadth 0'81. 



C. nodosus, Chitty. Maroon Town, St. James. 



Form, more depressed-conic. Colour, white, with light brown 

 epidermis, brown at lip and on operculum. Sculpture, lines of 

 growth, remarkably knotted corrugation on last whorl, pitted deep 

 about umbilical keel, and coarse lines of growth within. Spire, de- 

 pressed, with rather straight outlines. Whorls, 5i, well rounded, 

 with deep suture. Aperture, rather oblique to the left below. 

 Peritreme, slightly sinuate above. Umbilicus, wide, greatest breadth 

 0'3, funnel-shaped. Umbilical keel, not wide, but well produced. 

 Operculum, small, strong, sharp-edged lamina of 5 or 6 wide-apart 

 whorls, rising almost equally from the flat plane, end of last thick- 

 ened. Height - G, greatest breadth 0*85, least breadth 0*67. 



C. Beswicki, Chitty. Bogue Estate, north-east corner of St. 

 Elizabeth. 



Form, subglobose-conic. Colour, pinkish, with light brown epi- 

 dermis. Sculpture, very coarse lines of growth, very slight distant 

 corrugation on the last whorl, coarser below ; fine lines of growth 

 within umbilical keel. Spire, well elevated, with almost straight 

 outlines. Whorls, 5^, moderately rounded, with moderate suture. 

 Aperture, oblique and much dilated to the right below, depressed 

 above. Peritreme, slightly sinuate above, sharp on the right. Um- 

 bilicus, moderate, greatest width 0'25. Umbilical keel, strongly pro- 

 duced. Operculum, with lamina of about 9 much incurved close 

 spiral whorls, which are very slightly concave on the entire margins ; 

 end of last a little incurved to preceding one. Height 0'75, greatest 

 breadth 9, least breadth 074. 



C. perpallidus. Near Moore Town, Portland. 



This shell was originally brought to me by a negro named Shelly, 

 whom I could never, even by money ! excite to sufficient energy to 

 collect more. See Cat. Phan. p. 16. Operculum still wanting. 



4. Description of a New Species of Antelope (Oryx Bea- 

 trix) from Bombay ?, lately living in the Mena- 

 gerie of the Society. By Dr. John Edward Gray, 

 F.R.S., F.L.S., V.P.Z. & Ent. Soc. etc. 



(Mammalia, PI. LV.) 



The African genus Oryx is divided into two sections, according 

 to the form of the horn. In one, the Kookaam, or Gemsboc (O. 

 gazelld), the horns are straight ; in the true Oryx (O. leucoryx), they 

 are arched and recurved. The former has a hlack streak along 

 the lower part of the sides, and is found over a large extent of 

 Africa, from the Cape to Abyssinia ; for O. Biessa of Kiippell ap- 



