Worth American Helicidce. 347 



alt. 3 mill." In Mon. III. lie has the following, as variety of 

 H. pustula^ — 



(3. 2)ilosa, urabilico fere oranino obtecto. (Mus. Cuming, spec, authent.) 

 IT. leporina Gould in Proc. Bost. Soc. 1848, p. 39. 

 " " Reeve Conch. Ic. No. 722, t. 121. 



I suspect that Pfeiffer's description in vol. I. rather refers to H. 

 leporina. In Vol. III. Pfeiffer suggests that II. Lecontii Lea 

 may be an umbilicate variety of H. pustula, — it is identical with 

 H. loricata Gould. 



The magnified figure (fig. 20) in Chem. ed. 2, is quite unin- 

 telligible. 



Dr. Binney in Terr. Moll, describes as E. pustula Fer. a shell 

 which I believe to be entirely distinct. He says of it, — " the 

 spire is flat, has five closely revolving, rounded whorls, sepa- 

 rated by a deep suture, the outermost obtusely angular at its 

 upper limit ; beneath convexly rounded into a large umbilicus, 

 one-third the breadth of the base, and exhibiting the other 

 whorls within, and with a constriction behind the lip." He men- 

 tions that it is found at Darien, and Lee county, Georgia, and 

 in Florida. In his " Remarks" Dr. Binney speaks of the umbi- 

 lical perforation as being " far broader than in any other of the 

 polygyral group." 



Comparing the two descriptions above quoted, I was for some 

 time at a loss to understand Dr. Binney's species. 



In the early part of the present year I received, through the 

 kindness of Dr. "Wilson of Darien, Ga., several specimens which 

 I found to be the H. pustula Binney. This led me more carefully 

 to examine a number of hirsute shells, collected by Bishop 

 Elliott, Mr. Postell, and Mr. Dorman, which were labelled in 

 the cabinets both of Mr. "W. G. Binney and myself, H. leporina 

 Gould. I am now satisfied that they are II. pustula Fer., dis- 

 tinct from II. leporina, and that Dr. Wilson's Darien shell, the 

 H. pustula Binney, is an undescribed species. 



The groove within the umbilicus, is a very marked feature 



