in respect of an umbilicus is parallel with the similar variation 

 in Turbo. They are not the young of any larger species, for 

 tiie first one or one and one-half whorls are distinguished from 

 the following whorls by nuclear peculiarities, as want of sculp- 

 ture, &c. We are acquainted with the young of all the larger 

 species which inhabit the same localities, and none of them re- 

 semble these shells. 



Most of the specimens were obtained from a pint of sand, 

 which contained 110 species of shells, and which was taken 

 from a surface of three or four square yards of sand beach in a 

 little cove near Port Royal, Jamaica, on the outside of the pe- 

 ninsula. A few were found on the inside of the peninsula. 

 Of V. me^astoma and V. interrupta we obtained several speci- 

 mens : of tiie other species, — one to four of each. Probably 

 all the species are rare. 



TABLE OF MEASUREMENTS. 



DS\ 



