North American Helicidce, 27 



beneath ; pillar lip suddenly reflected, and pressed into the mouth at an 

 acute angle, beneath very acutely concave ; outer lip a little more pro- 

 minent in the middle, and within the edge protruded into the mouth ; 

 throat extremely narrow ; suture near the mouth suddenly reflected from 

 the preceding whorl, and carinate ; umbilicus dilated, very small within, 

 and exhibiting a groove on the outer whorl. 



Breadth of the female nearly half an inch, of the male about three- 

 tenths. Inhabits Florida. Cabinet of the Academy. This curious 

 species we found near St. Augustine, East Florida, in a moist situation. 

 They were observed, in considerable numbers; the color is reddish 

 brown, indistinctly banded with whitish lines, sometimes with darker 

 ones ; mouth white. 



The specimens preserved in the Cabinet of the Academy 

 at Philadelphia, said to have been Say's, but labelled in the 

 handwriting of Mr. Philipps, agree with those collected by 

 Mr. O. M. Dorman, and to which I refer in these notes. 



The group to which this species belongs has been very much 

 misunderstood. In 1816 Say described H. auriculata and H. 

 avara^ — he sent specimens to Ferussac, who enumerated them 

 in his Prodromus, and published figures in advance of the text 

 of the Hist, des Moll., which Deshayes contributed many years 

 later. 



Dr. Binney erroneously considered H. avara to be the imma- 

 ture form oi auriculata, and indeed referred all the forms known 

 to him to the latter species. In 1852 Shuttleworth described 

 Helix uvulifera, and Reeve published the same, with a figure, 

 as H. Jlorulifera. Of this I received specimens from Shuttle- 

 worth in 1853, — it appeared to be unknown to American con- 

 chologists. Subsequently I had a shell from Dr. Budd, without 

 name or locality, but unquestionably the H. avara Say, though 

 by no means agreeing with any species so labelled in the cabi- 

 nets to which I had access, including that of Dr. Binney, in 

 the possession of Mr. AV. G. Binney. 



During 1858 I received, through the kindness of Mr. O. M. 

 Dorman, a number of II. auriculata, collected by himself at 



