of Nai'th American Ilelicldm. 439 



Yak. /3. "Whorls subexserted, carina less acute and promi- 

 nent, partially obsolete behind the aperture, not covering the 

 sutures. 



Diam. maj. 24-, min. 19, Alt. 8 mill. (5 whorls). 

 " u 20i " 17 " 7 " (5 " ). 



Bp. Elliott collected many specimens at Columbus, Geo. 

 Tliis var connects II. Carolinensis Lea with II. obstrida, and is 

 generally found in cabinets under the former name. 



Yak. 7. Whorls more convex, the last obtusely angulated 

 in front of, but very little behind the aperture. 



Diam. maj. 21, min. 17, Alt. ^ mill. (5 whorls). South 

 Carolina, Lea! Cab. Acad. Nat. Sci. Phila. 



Diam maj. 18, min. 16, Alt. 7 mill. (5 whorls). My Cabinet. 



This is the typical H. Carolmensis Lea, holding precisely the 

 same relation to II. ohstr^icta, as H. palUata to II. jxilliata 

 var. 7. 



Helix TuUuosa ^ould. 



Pi. IV. fig. 21. 



I have lately received from Mr. A. O. Currier, of Grand 

 Rapids, Michigan, a very instructive specimen collected near 

 Pine Town, Cherokee County, Texas, by Miss S. N. Bates. 



It is larger than the usual form, and has the characteristics 

 of the species singularly developed. The last whorl is so pro- 

 duced as to leave both the lip teeth far within the aperture ; 

 the exterior scroMculi are long and deep, the space between 

 them being almost as much elevated as in H. auriculaia Say. 



In specimens had from Dr. Gould, the edge of the peristome 

 between the teeth is thickened, but in the example before me it 

 is produced into an erect, white, polished lamella, 3 mill, long 

 and Ih mill, in height, as shown in my jfigure. 



Dr. Gould remarks, that II. vultuosa differs from II. Texas- 

 iana Mor., " by having no line of callus connecting the j^illar- 

 tooth with the angle of the lip, thereby forming a re-entering 



