which inhabit Jamaica. \ 155 



inner peritreme moderately produced, and the outer peritreme 

 small and expanded into the plane of the aperture : umbilicus 

 small. 



Mean divergence about 40° ; length .36 inch ; greatest 

 breadth .2 inch ; least breadth .16 inch. 



For this and several other new and interesting species we 

 are indebted to Archibald Campbell, Esq., of New Hope, West- 

 moreland. 



Cyclostoma xanthostoma and C. i^nilahre have white- 

 lipped varieties, each of which may be designated by the name 



ALBILABRE. 



Cyclostoma jJi'oximum (p. 8, C. C.) is perhaps only a vari- 

 ety of C. fascia, Gray. 



Cyclostoma nit ens (p. 8, C. C.) appears to be connected 

 with C. Avg-usta; (p. 7, C. C.) by intermediate specimens, and 

 is probably only a variety. Another variety of C. Augustse 

 may be designated by the name of testudineum. Its sculp- 

 ture is more prominent, and the color is more or less like burnt 

 umber. It approximates towards C. fascia. 



The rufous or red lipped varieties of Cyclostoma Jayanum 

 and C. AugustfS may be designated by the name of rufilabre. 



Cyclostoma Chevalieri. Shell ovate conic : brown, darker 

 at the summit, white along the suture, around the umbilicus, 

 and with the peritreme white ; also with several spiral series 

 of dark brown dots, of which series two on the upper whorls 

 and three on the last are most conspicuous: smooth and 

 shining : spire rather convex, truncated with the loss of more 

 than two whorls; about four whorls remaining, which are 

 quite convex, with a moderately depressed suture : aperture 

 nearly circular ; the inner peritreme slightly developed ; outer 

 peritreme smooth and widely expanded, (especially above and 

 on the left side,) well appressed to the penult whorl : umbili- 

 cus very small. 



Mean divergence about 45° ; length .68 inch ; greatest 

 breadth .48 inch ; least breadth .35 inch. 



