^70 
MOLLUSCA. PULMONIFERA. Carychium. 
Gen. XXV. CARYCHIUM. — Tentacula two, eyes at tlie 
base behind, aperture obKque. 
96. C. Whorls live or six, rounded, smooth, 
glossy. 
Mull. Verm. 125.— Turbo, Walk. Test. Min. t. ii. f. 51 — T. Car. Mont. 
Test. Brit. 339. — Auricula minima, Drap. 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 has 
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. f. 42 — T. fuscus Mont. Test. Brit. 330. — Auricula lineata, Drap. 
Moll. 57— Bulimns lineatus, Turtm, Zoo\. Journ. No. viii. 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 Jungermannicc^ 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. Bern. iii. 84. t. v. fi 4. — A. in- 
xrassata, Sower. Min. Conch, t. clxiii. f. 1-3 — Green Sand, Blackdown. 
2. C. turgida. — 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. i.^.~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 
rounded above, the last subcylindrical, short ; aperture half the length of 
the shell, with a sharp outer-lip, and two plaits upon the columella— 
Min. Conch, t. ccclxxix. — In Crag. It is probable tliat these three fossil spe- 
cies are marine, and belong to a difterent genus. 
