28 COLIMACEA. 



Genus XI^CARYCHIUM.— Miiller. 



Shell oblong or cylindrical, with gradually increasing volu- 

 tions, few in number ; aperture straight, short, with folds on 

 the columella. 



1. Carychium minimum, pi. IV, f. 8, 9. 



Carychium minimum, Miiller, Verm., II, p. 125; PfeifFer, I, 

 p. 72, pi. 3, f. 45, 46; Leach, Moll., p. 133; Brown, Illust. 

 Conch., p. 34, pi. 14, f. 10, and pi. 18, f. 15; lb.. First Ed., pi. 

 41, f. 10 ; Jeffreys, Linn. Tr., XVI, p. 365 ; Fleming, Brit. An., 

 p. 270; Forbes, Mai. Mon., p. 12; Alder, Mag. Zool. and Bot., 

 II, p. 114; Thompson, Ann. and Mag. Nat. Hist., VI, p. 42; 

 Odostomo carychium,, Fleming, Edin. Ency., VII, p. 76; Auri- 

 cella carychium, Hartman, p. 49 ; Auricula mi^iima, Draper- 

 naud, Moll., p. 57, pi. 3, f. 18, 19; Turbo carychium, Montagu, 

 Test. Brit., p. 339, pi. 22, f. 2 ; Maton and Racket, Linn. Tr., 

 VIII, p. 184 ; Brown, Ency. Brit., 6th Ed., VI, p. 457- 



Shell conic, glossy, pellucid, white ; body and spire of about 

 equal length; the latter consisting of four very gradually taper- 

 ing, minutely striated volutions, well defined by the suture, 

 terminating in a somewhat obtuse apex ; aperture semioval, or 

 auriform, rounded both above and below; columella provided 

 with two tooth-like folds, and sometimes a small rudimentary 

 one above the others ; outer lip with a thickened margin, and 

 in its centre a tooth-like knob. Length hardly a line; breadth 

 one-third its length. 



This is the most minute of all the land shells, and is found 

 pretty generally diffused at the roots of grass, or on mossy 

 banks, in woods, and other moist situations. 



Genus XII. — ACME Hartmann. 



Shell subcylindrical, terminating in a blunted apex ; aperture 

 ovate, simple ; outer lip simple, thin, slightly reflected over the 

 columella, forming a subumbilicus. 



1. Acme fusca, pi. IV, f. 15. 



Acme lineata, Hartmann, Sturm, Faun., pi. 1, f. 4; Acme 



fusca, Brown, Illust. Conch., p. 34, pi. 14, f. 25; lb.. First Ed., 



pi. 41, f. 25; Thompson, Ann. and Mag. Nat. Hist., VI, p. 43; 



Turbo fuscus, Walker, Test. Min. Rar., p. 112, pi. 2, f. 42; 



