30 LAND AND FRESH- WATER SHELLS OF N. A. [PART I. 



Body elongated, semi-cylindrical, tapering to a point pos- 

 teriorly, convex above, plane beneath, the whole area forming a 

 locomotive disk ; integument reticulated by furrows surrounding 

 numerous longitudinal mucus glands ; mantle simple, not ex- 

 tending beyond, and accurately fitting to, the peristome of the 

 shell, into which the whole animal may retire ; head obtuse, 

 without a constricted neck. 



Hyalina cerinoidea, Anthony. — Shell perforated, globosely 

 flattened, shining, light horn color, scarcely wrinkled by 

 Fig. 30. lines of growth ; whirls seven, hardly convex, the last 



slightly inflated below ; aperture oblique, subcircular ; 

 peristome simple, acute, its ends joined by a light callus. 

 Greater diam. 7, lesser 6 ; height 3 mill. 



Helix cerinoidea, Anthony, Am. Journ. Conch. I, 351, 



pi. XXV, f. 4 (Oct. 1865). 

 Mesomphix cerinoidea, Tryon, Am. Journ. Conch. II, 



255, pi. iv, f. 36 (1866). 



North Carolina. 



The specimen figured was loaned by Mr. Anthony. 



Fig. 31. 



Hyalina cellaria, MiJLLER. — Shell very much depressed, thin, 

 fragile, pellucid ; epidermis light greenish horn-color, smooth, highly 

 polished ; whirls five, slightly rounded, with minute and 

 almost imperceptible, oblique striae ; aperture not dilated, its 

 transverse diameter the greatest ; iimbilicus moderate, regu- 

 larly rounded, deep ; base rounded, thickened within by a 

 testaceous deposit, bluish-white ; peristome "simple, acute. 

 Greater diam. 13, lesser \\h ; height 5 mill. 



Helix cellaria, MuLLER, Hist. Verm. II, 28. — Pfeiffer, Mon. 

 I, 111.— BiNNEY, Bost. Journ. Ill, 421 ; Terr. Moll. II, 

 230, pi. xxix, f. 4.— Gould, Inv. 180, f. 104, excl. syn. ? 

 (1841).— DeKay, N. Y. Moll. 37, pi. iii, f. 35 (1843).— 

 Leidy in Terr. Moll. U. S. I, 233, pi. vii, f. 1 (1851), anat.— W. G. 

 Binney, Terr. Moll. IV, 111. 

 Hyalina cellaria, Morse, Journ. Portl. Soc. I, 12, f. 18, 19, pi. v, f. 20 

 (1864).— Tryon, Am. Journ. Conch. II, 249, pi. iii, f. 19 (1866).— 

 MoESE in Amer. Nat. I, 541, f. 29 (1867). 

 Helix glaphyra. Say, Nich. Encycl. Am. ed. pi. i, f. 3 ; Binney's ed, 7, 

 pi. Ixix, f. 3.— Eaton, Zool. Text-Book, 194.— Bland, N. Y. Lye. 

 Ann. VI, 352, not of Pfeiffer, Reeve, Deshayes. 



