72 Remarks on Certain Species of 



valido, obliquo, in pariete aperturali intrante coarctata ; perist. reflexo, 

 intus albo-calloso. 



Shell imperforate, depressed, rather solid, with numerous 

 oblique rib-like striae, dark horn-colored ; spire short, obtuse ; 

 whorls 4|^, rather convex, the last descending at the aperture, 

 slightly angular at the periphery, constricted, above gibbous ; 

 base convex, excavated in the middle ; aperture depressed, with 

 a strong oblique lamelliform parietal tooth; peristome reflected, 

 with a white callus within. 



Diam. maj. 10, min. 8, Alt. 4J, mill. 



Habitat. — Mountains in Cherokee Co., K. Carolina, David 

 Christy ! 



RemarJcs. — ^This shell has curious affinities with other North 

 American species. Without a hairy epidermis, and having the 

 rib-like striae of the small varieties of H. tridentata Say, it has 

 the form of aperture, parietal tootli, and peristome of II. inflecta 

 Say. Having a parietal tooth only, it is allied to H. monodon, 

 Rack; but independently of the form of the tooth being like 

 that of II. inflecta^ its closer relation to the latter is shown by 

 the absence of the fidcruin, which is characteristic of the 

 former. Being imperforate, and having the single tooth, this 

 species is also allied to H. gerrnana Gould, from Oregon, but 

 it is less globose, and the epidermis and sculpturing are entirely 

 different. 



Helix IVheatleyi, noT. sp. 



Plate IV. fig. 1. 



T. imperforata, depresse conoideo-globosa, tenuinscula, rufescente- 

 cornea, conferte costulato-striata, sub lente minute granulata, pilis bre- 

 vissimis ornata ; spira breviter conoidea ; sutura valde impress^ ; anfr. 5 J, 

 couvexiusculis, ultimo rotundato, ad aperturam breviter deflexo, constricto ; 

 basi convexo, circa columellam excavato ; apertura obliqua, lunari> 

 pariete aperturali tuberculo dentiformi parvo munito ; perist, acuto, roseo- 

 labiato, tequaliter angulatim reflexo, columellari adnato. 



