of North American HelicidcB. 103 



the peristome is situated lower than in the typical form ; and 

 in consequence tlie space between it and the inferior tooth is 

 reduced. 



From Darien, Ga. (Dr. Wilson !), and St. Simon's Island, Ga. 

 (J. Postell !), I have a variety in which the epidermis has very 

 little of the usual hirsute character ; the aperture is more 

 rounded, and the two lip teeth are small, in fact mere denticles. 

 The parietal tooth is less oblique and more central, not being 

 continued to the lower margin of the little reflected lip. 



Helix Ru^eli 81iuttleworth. 



The following is a copy of Shuttleworth's description of this 

 species {Diag. n. Moll., No. 2, p. 18). 



T. obtecte perforata, orbiculato-convexa, granulato-striata, parce setosa, 

 corneo-cerea ; spira brevis, obtusa ; anfr. 5^, convexiusculi, ultimus 

 antice subito deflexus, ad aperturam valde constrictus ; apertura depressa, 

 dente valido linguiformi flexuoso in pariete aperturali intrante coarctata ; 

 perist. reflexum, intus callosum, margine dextro dente magno obtuso 

 profunde immerso extus subscrobiculato, basali dente minore transverse 

 submarginali instructo. 



Diam. maj. 13, min. 11|-, Alt. 6^ mill. 



Hab. — In Tennessee (Rugel). 



Ohs. — Specimina plurima vidi. Variat magnitudine, sed semper 

 major quam H. inflecta Say, cui maxime affinis ; differt insuper dente 

 parietali magis evoluto et angulatim flexuoso, et dente supero marginis 

 dextri peristomatis crasso et valde immerso. 



As regards the form and position of the upper tooth on the 

 lip, this species has the same connexion with H. inflecta, as H. 

 fallax with H. tridentata. 



Shuttleworth's measurements show that his species is not 

 always larger than II. inflecta. The following are the dimen- 

 sions of the largest and smallest specimens in my cabinet. 

 Diam. maj. 13^, min. 11^, Alt. 6 mill. Cherokee Co. N. Car. 



Christy ! 

 « u 9 u Y " 4i- " * 



