snak 
de 
436  Binneys Monograph of the Helices 
Shell. Minute, depressed-convex ; epidermis whit- 
ish ; whorls four, convex; suture very distinetly 
itigirensed.; aperture nearly circular; lip thin, acute ; 
umbilicus large, not spread, and oxiibillilf not more 
than two volutions ; base rounded on the body-whorl. 
Greatest transverse diameter less than one dium 
of an inch. 
GreocnRaPHIiCAL Disrrisution. Found in Ohio, 
on the margins of streams, under chips or sticks in 
damp, shaded. situations, or under the bark of de- - 
caying stumps near the surface of the waters. Pro- - 
fessor C. B. Adams has lately found it in Vermont. 
Remarks. This minute shell is but little larger 
than HeLrx pulchélla, which it resembles somewhat 
on its upper surface. It also bears some resemblance 
to small specimens of the preceding species. lt has 
four full whorls, with deep sutures; is handsomely 
rounded ; has a circular aperture, and a large umbili- 
cus, which exhibits about two volutions. Its strie of 
increase are too minute to be visible by the eye. 1 
- do not know any species with which it is likely €9 
be pontounded 
; 48. HELIX LINEATA. — 
Plate XXII. fig. 6. 
H. wem —— — planulatà, subtus concava, corneo-viti- 
descente ; anfra ; lineis parallelis, volventibus, sub-eleva- 
tis; sabio lato, expanso; labro i vedi ; faucibus dentibus binis 
Sxvoxvs AND REFERENCES. 
Helix lineàta, Saj. Journ. A. N. S. Philuds k 18; 
* 4 a 
