330 



A MANUAL OF AMERICAN LAND SHELLS. 



Pupa corticaria, Say. 



Shell whitish, shining, cylindrical, obtuse at the apex ; whorls rather 

 Fig. 355. more than 5, convex ; suture well impressed ; aperture lat- 

 eral, two-tbirds as wide as the last whorl, suborbicular, 

 with a single tootb (sometimes two) on the i)arietal wall 

 near the center, and a tooth-like enlargeinent near tlie 

 umbilical termination of the peristome, which is white, 

 p. corticaria. reflected; umbilicus very minutely perforated. Length, 

 2i"™ ; diameter, l"""'. 



Odosiomia corticaria, Say, Nich. Eucycl., iv, pi. iv, fig. 5; ed. 1 (1817); ed.2 (181S); 



Binnky's ed., 7, pi. Ixxii, fig. 5. 

 Fupa corticaria, Say, Nich. Eucycl., iv, ed. 3, 1819, pi. iv, fig. 5.— Gould, Bost. Jouru. 



Nat. Hist., iii, 397, pi. iii, fig. 19 (1840) ; iv, 358 (1843).— De Kay, N. Y. Moll., 



50, pi. iv, fig. 49 (1843).— KDsTER, iu Chemnitz, ed. 2, 27, tab. xiii, figs. 



^9^20.- Pfeiffkk, Mon. Hel. Viv., ii, 328.— Binney, Terr. Moll., ii, 339, pi. 



Ixxii, fig. 4.— W. G. BiNNEY, Terr. Moll., iv, 146 ; v, 209; L. & Fr.-W. Sh., i, 



244 (1869).— Gould and Binney, luvert. of Mass. [2], 439 (1870). 

 Carychiiim corticaria, FI^;russac, Prodr., No. 3 (no descr. ). 

 LiucochiUi corticaria, Morse, Jouru. Portl. Soc, i, 36, fig. 87; pi. x, fig. 88 (1864). — 



Tryon, Aiu. Jouru. ConcL., iii, 307 (1868). 



• From Maine and Wisconsin to South Carolina and Mississippi. I 

 believe, therefore, that it will prove to be found over all the Eastern 

 Province. 



Animal whitish, darker upon tbe bead and eye-peduncles ; the latter 

 are long and club-shaped j tentacles short, thick. 



This is a very thin and delicate shell, and has a peculiar transparency, 

 Pig. 356. resembling spermaceti. The aperture 



is somewhat circular, the upper part 

 being interrupted by the last whorl 

 and tbe extremities of the peristome 

 not being connected. The smaller 

 tooth is often wanting, and sometimes 

 both. In the number and position of 

 the teeth it somewhat resembles Cary- 

 chium exiguum, but it is less fusiform 

 and more cylindrical. In general out- 

 line and in the shape of the aperture it very much resembles P. rupi- 

 coJa, but the parts within the aperture are very different. It is, how- 

 riG.357. ever, just what the immature shell of that species 



•jjj \ might be supposed to be when tbe dentiform de- 

 j^^ of j'j.pa corticaria. P^^its werc Only commenccd and the peristome 

 thin and unfinished. I am much inclined to be- 



l'u]}a corticaria. 



(Moi«c. 



