»■ 



i 



490 



Binney^s Monograph of the Helices 



animals of this genus is much influenced by the nature of 



their food. 



8. HELIX ELEVATA. 



Plate XIX. 



(H. testA orbiculato-conoidc^j imperforate luteo-corneii ; spira ele- 

 vata -J anfractibus sex, tenuiter striatiSj striis obliquis ; apertura sub- 

 angulatii ; labro alboj parte inferior! sub-dentato, margine reflexo ; 

 columella dente robustOj albo, subarcuatOj armat4. 



Synonyms and References. 



t 



Helix elevata, Say. Journ. Acad. Nat. Sc. PhiL Vol 



II, p. 154. (An. 1821.) 

 American Conchohgy. No. iv, pL 37, Jig' 2. 

 Helix Knoxvillina^ Fcrussac. Hist. Nat, des Moll- PI* 



xLiXj jig. Ay Sj 6. 



/ 



Mesodon hellcinum, Rajiiiesque. 



V 



1 



Description. 



i 



r 



Animal. Ashy brown on the upper surface, lighter on 

 the posterior extremity and sides ; collar greyish-white ; 

 glands prominent and distinct. 



Shell 



ev% 



dermis^ yellowish horn-color : whorlsy nearly sevenj 

 rounded, with fine oblique transverse striae : suture^ dis- 

 tinct: aperture^ contracted by the lip, somewhat trian- 

 gular : lipy white, reflected, lower inner margin a little 

 thickened : pillar-lip^ with a large, white, robust, oblique- 

 ly-curved tooth : umbilicus covered. 



Greatest transverse breadth seven eighths of an inch. 



Geographical distribution. Inhabits the western 



.-'•',.•- 



^ 



