152 



LAND AXD FRESII-WATER SHELLS OF N. A. [P ART I. 



Cat. jN'o.INo. ofSp. 



Locality. 



From whom received. 



Remarks. 



8742 



Georgia. 



W. G. Binncy. 



Fig. 259. 



Helix devia. 



Helix dCTia, Gould. — Shell umbilicated, soliil, depressed globose, 

 pale yellowish horn-color, or brown, with fine lines of growth ; whirls six, 

 convex, suture well defined ; beneath slightly convex, and perforated by 

 a moderate-sized umbilicus, which appears to have 

 an obtuse channel revolting on the whirls within it ; 

 periphery rounded ; aperture transverse, obliquely 

 lunate; peristome thickened, white, or sometimes 

 rufous, rather broadly reflected, horizontal at base, 

 the inner edge dilated into an elongated, lamellar, 

 white, tooth-like process, and abruptly turning up 

 to form a short columella, where it dilates, and 

 partly surrounds the umbilicus ; near the upper margin, and on the 

 parietal wall, is a white trigonal tooth. Greater diam. 24, lesser 19 ; 

 height 14 mill. 



Bellx devia, Gotjld, Proc. Bost. Soc. Nat. Hist. II, 165 (1846) ; Terr. 



Moll. Ill, 11; Moll, of Expl. Exped. 69, f. 74, Addenda, *50l 



(1852).— Pfeiffer, Mou. Hel. Viv. I, 383.— W. G. Binney, Terr. 



Moll. IV, 17, pi. Ixxix, f. 13. 



Helix baskervillei, Pfeiffer, Proc. Zool. Soc. 1849 ; Mon. Hel. Viv. Ill, 



230.— Reeve, Con. Icon. f. 684. 

 Mesodon devia, Trvon, Am. Journ. Conch. Ill, 42, pi. viii, f. 3 (1867). i 



Oregon ; Wasbington Territory. 



Helix profunda. Say. — Shell broadly umbilicated, orbicularly de- 

 pressed ; epidermis yellowish horn-iolor, with reddish-brown, revolving 

 lines and* bands, sometimes uniformly brown or 

 Fig. 260. albino ; whirls from five to six, convex, ob- 



liquely striated with delicate and regular raised 

 striie ; suture distinct ; aperture almost circular, 

 a little contracted by the peristome, flattened 

 towards the plane of the base ; peri.^tome white, 

 thickened, reflected, with a slightly prominent 

 Eelix profunda. callus, or obtuse tooth, on the inner edge near 



the base ; umbilicus rather large and profound, 

 exhibiting all the volutions to the apex ; base convex, with the strife con- 

 verging into the umbilicus. Greater diam. 29, lesser 24 ; height 14 mill. 

 Helix profunda, Say, Journ. Phila. Acad. II, 160 (1821); American 

 Conchology, No. 4, pi. xxxvii, f. 3 ; ed. Binxey, 20, 36, pi. xxxvii, 

 f. 3 ; ed. Cuenu, III, 51, pi. xiii, f. 2, b, 2, c— DeKay, N. Y. Moll. 

 42, pi. iii, f. 3.— Leidy, T. M. U. S. I, 255, pi. ix, f. 1-3, anat.— 

 BixNEY, Bost. Journ. Nat. Hist. Ill, 377, pi. xv ; Terr. Moll. II, 177j 



