West Indian Marine Shells. 395 



C. minimum. Gmel. and C. sonale Briig., perhaps also with C. 

 septemstriatum Say, C. ferrugineum Say, C. megasoma C. B. 

 Ad., and C. nigrescens Menke. 



Cerithium vicimim C. B. Ad., and C. rugulosum C. B. Ad.. 

 we take to be synonymes. 



Chemnitsia exilis C. B. Ad., C. flavocincta C. B. Ad., C. lac- 

 vis C. B. Ad., and C. suhulata C. B. Ad., are very like each 

 other. 



Chemnitsia multicostata C. B. Ad., and C substriata C. B. 

 Ad., may, when a sufficient number of specimens are at hand, 

 prove to be synonymes. 



Chemnitsia obeli scus C. B. Ad., is described from three 

 pieces of different and very imperfect individuals. 



Chemnitsia jpuncta C. B. Ad. (not punctata), is described 

 from two miserable specimens. 



One species from Jamaica, seven from St. Thomas, and three 

 from the " West Indies" are without names. 



Columbella catenata Sowb., and C. subcostata C. B. Ad. 

 Specimens w T ith these two names are positively the same 

 species. 



Columbella costulata C. B. Ad., described from a single spe- 

 cimen from Jamaica, we consider syn. with C. dbesa C. B. 

 Ad. 



Columbella purpurascens C. B. Ad., is placed next to C. dor- 

 mitor Sowb., and is the same species. 



Conns aurantius Hwass., is in a box with and under the name 

 of C leucostietus Hwass. 



Conus cretaceus Ivien., from Jamaica, we take to be C. jymio 

 Briig., which we consider the young of C. mindamis Hwass. 



Conus maculiferus ? Sowb., from Jamaica, appears to be the 

 young of C. leucostietus Hwass. 



Erato cypraeoides C. B. Ad. Numerous specimens from 

 Jamaica. 



JEidima arcuata C. B. Ad. We believe this is to be nothing 

 more than a monstrosity. 



