270 MOLLUSCA. PULMONIFERA. Cabychium. 



Gen. XXV. CARYCHIUM.— Tentacula two, eyes at the 

 base behind, aperture obKque. 



96. C. minimum.-^WhoTls five or six, rounded, Bmooth, 

 glossy. 



Mull. Verm. 125 — Turbo, Walk. Test. Min. t. ii. f. 51 — T. Car. Mmt. 

 Test. Brit. 339. — Auricula minima, Drop, MolL 57 — Among moss, 

 common. 

 Length about a line, of a pale white colour, the lines of growth very mi- 

 nute. Aperture slightly contracted retrally ; outer-lip with one tooth, the 

 inner-lip at the pillar with two teeth. Peristome thickened, reflected. — La- 

 marck substituted Auricula in place of Carychium, a change in which he ha^s 

 been followed, of course, by his countrymen. 



97. C. fuscum. — Whorls six, the lines of growth distinct, 

 the mouth without teeth. 



Turbo quinque anfractibus striatis apertura subovali. Walk. Test. Min. 



t. ii. fl 42 T. fuscus Mont. Test. Brit. 330. — Auricula lineata, Drap. 



IMoll. 57.— Bulimns lineatus, Turton, Zoo\. Journ. No. riii. 565. — 



England. 

 Length about |th of an inch, glossy, brownish ; separating line distinct, 

 marginated ; aperture rounded anteally, narrow retrally ; peristome slightly 

 thickened, white. Tentacula long, between which and the eyes behind are 

 two jagged spots. This species was first observed at Bysing Wood, near 

 Faversham, by Walker. Mr Miller, in 1822, informed me that General 

 Bingham had found it about eleven miles from Bristol, and Dr Turton ob- 

 serves, that " it is found abundantly in wet springy places in various parts of 

 Devonshire, imbedded among the JungermannicB, constantly exposed to the 

 drippings of springs.— A variety is also found of a pale yellowish colour." 



EXTINCT SPECIES. 



1. C incrassata. — Ovate, ventricose, transversely sulcated, longitudinally 

 striated ; spine short ; mouth angular above, with very thick lips ; columella 

 three-plaited.— Auricula ringens. Park, Org. Rem. iii. 84. t. v. f. 4. — A. in- 

 crassata, Sower. Min. Conch, t. clxiii. f. 1-3.— Green Sand, Blackdown. 



2. Cturgida Ovate acute, turgid, transversely striated, shining; spire 



short, acute ; aperture oblong, with thickened lips ; columella two-plaited ; 

 outer-lip smooth within ; thickest in the middle — Auricula turgida, Sower. 

 Min. Conch, t. clxiii. f. it.— London Clay, Highgate. 



3. C. simulata. — Oval, pointed with transverse laterally toothed costa ; 

 whorls slightly ventricose ; mouth angular above ; outer-lip sharp, striated 

 within ; two broad plaits upon the columella. (Bulla sim. Brander, 61.) Sower. 

 Min. Conch, t. clxiii. f. 5-8 — London Clay. 



4. C. pyramidalis. — Ovate, pointed, smooth ; spine pyramidal ; volutions 

 lounded above, the last subcylindrical, sliort ; aperture half the length of 

 the shell, with a sharp outer-Up, and two plaits upon the columella. — Sower. 

 Min. Conch, t. ccclxxix.— In Crag. It is probable that these three fossil spe- 

 cies are marine, and belong to a different genus. 



