IIEBRA. ; 



is defined by nodules ; ribs not close, frequently broken into 

 nodules by the revolving stria 1 , ; columella callus rather widely 

 spread. Usually olive, chocolate or nearly black, light banded 

 on the periphery and flecked with revolving chestnut spots ; 

 sometimes the shell is nearly white, and then, whilst retaining 

 the red spots, the band is also red, or absent. 

 Length, -B--8 inch. 



Went Indies ; Atlantic Coast of 1 lie United States, northward 



to Chesapeake Bay ; Rio Janeiro, Brazil. 



Say's type was a stunted specimen, and is badly figured (tig. 

 1 98). Reeve's figure represents a very different species, a juven- 

 ile A". Hubxpinosa, Lam., from the Philippines ; but N. AntiUarum, 

 Phil. (figs. 199-201 , and N. Sturmii, Phil. (fig. 202 \ will give a 

 fair representation of the usual range of the species in size and 

 color. M. tessellata, Reeve (fig. 203^, N. fida, Reeve (tig. 204), 

 both described without locality, and N. cinisculus-, Reeve (fig. 

 205), from St. Thomas, W. I., are also synonyms. N. Fretennex, 

 Perkins (fig. 206), is supposed by its author to possess distin- 

 guishing characters in its proportions, sculpture and color, but 

 it is well within the range of variation of X. vibex, in all these 

 particulars : it is found, though rarely, at New Haven, Conn., 

 and near Salem. Mass., and may have been carried there with 

 southern oysters. .V. -panHro^ald. Alarrat. an nnh'gured species 

 from Nassau (Bahamas?), is also a probable synonym. N. poly- 

 yonata, Lam. (tig. 207), is certainly very closely allied to N. 

 cibex ; it has been misunderstood by Reeve, who has figured for 

 it a very different species, and Kiener has confounded with it N. 

 Jacksoniana, Qnoy, a var. of A T . monile. Kiener. 



Submenus Hebra, II. mil A. Adams. 



I retain this group after modifying the original diagnosis, 

 which only applies to immature specimens. The muricated or 

 spinose ornamentation forms a convenient separation from 

 Phrontis. and the columella callus is also more defined, but the 

 spire is not '' elevated " more than usual, nor is the outer lip 

 without v.arix or dentie illations, when mature. 



X. KUBSPIXOSA, Lam. PL 13, figs. 208-212. 



Spiny, nodulous, the nodules generally forming three promi- 

 nent revolving series on the body-whorl, but sometimes subor 



