HELIX. 97 



those on the sides and posterior part of the foot, when ex- 

 amined bj a microscope, exhibit numerous sub-cutaneous 

 white dots, or points, arranged in clusters. Length 

 equalling twice the diameter of the shell. 



SHELL. Convex, ventricose ; epidermis uniform yel- 

 lowish or brownish horn-color ; whorls six, with numerous 

 coarse, raised, parallel strife, the body whorl very large 

 and turgid ; suture deeply marked ; aperture rounded, 

 contracted by the lip, and small in proportion to the size 

 of the shell ; lip white, thickened, reflected, inner mar- 

 gin near the base of the shell projecting, more or less 

 prominent and tooth-like ; umbilicus covered ; base thick- 

 ened with a testaceous callus in old specimens. 



Greatest diameter one inch and three-quarters. 



GEOGRAPHICAL DISTRIBUTION. This species is found 

 in Tennessee, South Carolina, Georgia, Alabama, and 

 Florida, and probably in other Southern States. It is com- 

 mon in hickory and oak woods, near streams in Florida. 



REMARKS. This is the largest Helix hitherto discov- 

 ered in the United States. It is not uncommon in cab- 

 inets, but has generally been considered to be a large 

 variety of Helix albolabris, Say. This was probably 

 Mr. Say's opinion, as the specimens figured by Ferussac 

 were received from him. Some acquaintance with the 

 species in its native habitat, and comparison of a large 

 number of specimens with Helix albolabris, have induced 

 me to give it a place as a distinct species. It cannot be 

 confounded with any other than that shell, and differs 



VOL. II. 13 



