466 AURICULID^. 



But very few species of this genus have been described, most of 

 which are from Europe. Animal terrestrial. 



Carychium exiguum. 



Fig. 122. 



Shell minute, whitish, oblong-ovate, rather pointed ; whorls five ; the transverse 

 lip very oblique, with a small fold near its internal angle ; outer lip widely re- 

 flexed. 



Pupa erir/ua, Say, Journ. Acad. ii. ST.'i (1822) ; ed. Bixxet, 26. — Gould, Bost. Journ. 



iii. .398, pi. 3, tig. 20 (1841) ; iv. 358 (1843); Inv. 191, %. 122 (1841 ). — De Kay, 



New York Fauna, 49, pi. 4, fig. 46 (1843). — Adams, Vermont Moll. 158, figure 



(1842). 

 Bnlimus exiguus, Binney, Terr. Moll. ii. 286, pi. 53, fig. 1. 

 Carychium exiguum, Gould, in Terr. Moll. ii. 286. — Chemnitz, 2d ed. 61, pi. 1, figs. 13, 



14. — Pfeiffer, Mon. Auric. 165; Brit. Mus. Auric. 127; Wiegm. Arch. 1841, i. 



224. — W. G. Binney, Terr. Moll. iv. 178. — Frauenfeld (1847), Akad. der Wiss. 



xix 79; Zool. Bot. VVien. iv. 10, pi. 1, fig. 1 (1854). — Bourguignat, Mag. Zool. 



1857, 209.— W. G. Binney, Smith. Inst. L. and Fr. VV. Shells, ii. 6, figs. 7, 8 



(1865). 

 Cari/clnum exile, H. C. Lea, Am Journ. Sc. [i], xlii. 109, pi. 1, fig. 5 (1841). — Tros- 



CHEL, Ar. f. Nat. ii. 128 (1843). 

 Carychium existelium, Bourguignat, 1. c. 220. 

 Carychium euphmm, Bourguignat, 1. c. 221. 



Shell elongated, pellucid, tapering somewhat to both ends, apex 

 not very blunt; color watery-white ; whorls five, rather convex, very 

 oblique ; suture very distinct ; aperture obliquely oval ; 

 '^ '  transverse lip very oblique, and having near its inner ter- 

 mination a small, tooth-like fold ; another very small, 

 tubercular tooth is found at the middle of the pillar ; out- 

 er lip white, widely reflected, but not flattened. Length, 

 one fifteenth of an inch ; breadth, one fortieth of an inch. 

 Has been found in the New England, Northern, and 

 Middle States, in South Carolina, Arkansas, and Texas. 

 Animal colorless ; tentacles stout, hyaline, one third the length 

 of the foot. The foot is short, thick, distinctly divided into two 

 segments, the anterior of which is bilobed, and projects, when the 

 animal is in motion, considerably in advance of the head. Eyes 

 oval, situated on the back, near the base of the tentacles. Its mo- 

 tions are very sluggish. It carries the shell directed horizontally ; 

 the shell is so transparent that the viscera of the animal may be 

 seen through it. 



It has been said to resemble Carychium minimum, of MUller, but 



i 



