HELIX. 



11 



Galveston and Corpus Cbristi, Texas. 

 Cuba. 



Also near Havana, 



SuBGENPS PATULA, Hald. 



Shell widely umbilicated, depressed, discoidal, turbinate, rugose 

 or eostulately-striate ; whirls 4-6, equal or gradually increas- 

 ing ; aperture lunately- 



rounded ; peristome 

 simple, straight, acute. 

 Animal (of Helix 

 solitaria) stout, short, 

 head blunt, eye-pedun- 

 cles long, slender ; foot 

 but slightly projecting 

 posteriorly. 



Fig. 118, 



Animal of Beiij; n^AUaria. 



Helix solitaria and albino. 



Helix solitaria, Sat. — Shell broadly umbilicated, globosely de- 

 pressed, coarse, solid, diaphanous, obliquely and crowdedly wrinkled, from 

 white to dark reddish horn- 

 color with from two to three Fig. 119. 

 brownish revolving bands ; 

 whirls six, convex; suture 

 deep ; aperture roundedly- 

 lunate, pearly white and 

 banded within ; peristome 

 simple, acute, its ends join- 

 ed by a thin transparent 

 callus, that of the colu- 

 mella dilated, subreflected. 

 Greater diam. 25, lesser 22 ; height 15 mill. 



Helix solitaria, Say, Journ. Phila. Acad. II, 157 (1821) ; Btnnet's ed. 



19.— DeKay, N. Y. Moll. 43, pi. iii, f. 41 (1843).— Binney, Host. 



Journ. Nat. Hist. Ill, 426, pi. xxii (1840) ; Terr. Moll. II, 208, pi. 



xxiv.— Chemnitz, 2d ed. I, 180, pi. xxiv, f. 5, 6.— Pfeiffer, Sym- 



bolae, II, 39 ; Mon. Hel. Viv. I, 102.— Reeve, Con. Icon. 6(52 (1852). 



— W. G. Binney, Terr. Moll. IV, 96.— Leidy, T. M. U. S. I, 254, pi. 



viii, f. 7-10 (1851), anat. 

 Anguispira solitaria, Tryon, Am. .Journ. Conch. 11, 260, pi. iv, f. 46 (1866). 



In the States north of the Ohio River, in lower Missouri, and 

 in the Cceur d'Alene Mountains. Montana ? (Cooj^er). In the 

 postpleiocene deposits of the Mississippi A^alley. 



