HELIX. 93 



would have been anticipated. It occurs in Illinois (Ken- 

 nicott!) Indiana (Ingalls) — also at St. Simon's Isle, 

 Ga. (Postelll) Savannah (Elliott!) and on the Cattahoo- 

 chee River, Ga. (Neisler!) 



From letters received from Dr. PfeifFer, he seems to have 

 reversed his opinion regarding the identity of this species 

 and H. pustula. 



" Within and near the aperture, there is what may be 

 called the ^ fulcrum,^ extending from the floor of the last 

 to that of the penultimate whorl, and approaching in 

 character to, but less strongly developed, than that in H. 

 monodon Rack. The outer edge of this fulcrum is un- 

 even, — in one of my specimens somewhat denticulated." 

 (Bland.) 



HELIX PUSTULOIDES Bland. 

 Plate XXXIX. Figure 3. 



This is the pustula of the Terrestrial Mollusks (vol. ii. 

 p. 201) and not of Ferussac. Bland's description is given 

 below from the N. Y. Ann. vi. 350, Notes, 40. 



The species has been detected at Darien, Ga. (Dr. S. 

 W. Wilson,) Columbus, Ga. (Neisler.) 



T. late et perspective umbilicata, planorboidea, temiiuscula, rufo-vel 

 pallide-cornea, minute striatula; epidermide tenui, pilosiuscula ; spirS 

 vix elevata; anfr. 4-4|^, convexiusculis, lente acci-escentibus, ultimo 

 superne ad peripheriam obtuse angulato, ad aperturam gibboso-constrieto, 

 subito deflexo, basi deviante ; sutura valde impressa ; umbilico lato, J 

 diam. maj. sequante, omnes anfractus monstrante, praesertim penultimum ; 

 apertura obliqua, lunato-circulari ; dente erecto, obliquo, albo, lamelli- 

 formi, in pariete aperturali munito, callo lineari subarcuato superne ad 

 angulum aperturae juncto ; perist. reflexo, roseo, marginibus conniventi- 

 bus, dentibus duobus sinu disjunctis instructo. 



H. pustuloides is intermediate in size between H. pustula and H. 

 leporma, — is less globose than the former, and more sparingly hir- 

 sute. It differs widely from both in the character of the umbilicus, 



