[44] 



CONULUS, Fitz. 



a. Diain.=2'^ — 3 mill. 



1. Conulus chersina, Say. 



Plate 4, figure 37. 



Whorls 5 — 6, convex, sub-conical, thin, pellucid, smooth, 

 shining, amber-colored, suture well impressed ; aperture nar- 

 rowly transverse, base convex, indented around the closed 

 umbilicus. 



Diam. 2|, height 2 mill. 



The whole country westward to Rocky Mountains ; San 

 Gorgonio Pass, Los Angelos Co., California. 



This shell is not the G.fulva, of Europe, with which it has 

 been confounded ; the differences pointed out by Mr. Morse, in 

 •his "Shells of Maine," appear to be constant. 



2. Conulus Fabricii, Beck. 



Plate 4, figure 38. 



Whorls 6, convex, sub-conical, apex rather acute, suture 

 profound ; whorls striate, narrow, last whorl wider, base con- 

 vex, impressed at the axis, which is nearly imperforate ; aper- 

 ture transversely lunar ; color fulvous, pellucid. 



Greenland. 



Scarcely distinguished from No. 1 by the sub-perforate 

 umbilicus. 



S. Conulus Gundlachi, Pfeiffer. 



Plate 4, figure 04. 



Turbinate, shining, fulvous ; whorls 5, convex, the last sub- 

 planulate at base, excavated around the perforation, faintly 

 marked with revolving lines ; aperture depressed lunar. 



Diam.. '2^, height If mill. 



Florida, Cuba. 



More depressed than No. 2. Differs from No. 1 in the per- 

 forate axis. 



