FAMILY AUUICULACEA. 131 



Carychium myosotis, Ferussac (1807), Ess. Meth. Conch, p. 54. 



Auricella myosotis, Jurine (1817), Helv. Almanack, p. 34. 



Pythia myosotis, Beck (1837), Ind. Moll. p. 101. 



Conovulus denticulatus, var. myosotis, Forbes and Hanley (1853), vol. iv. 



p. 195. pi. cxxv. f. 4, 5. 

 Carychium (Phytia) myosotis, Moquin-Tandon (1855), Hist. Moll. vol. ii. 



p. 417. pi. xxix. f. 33 to 39, and pi. xxx. f. 1 to 4. 

 Hob. Central and Southern Europe. South and south-west of England. 



(Under stones or in mud, about the mouths of tidal rivers.) 



In this species the shell is of a more oblong square form, a little in- 

 flated, and there is no serrated ridge of small teeth within the lip, 

 although it is a little swollen. M. Moquin-Tandon describes the 

 animal as being rather rapid in its movements and irritable, emer- 

 ging from its shell a little obliquely. The tentacles appear, he con- 

 tinues, like conical protuberances fixed on the muzzle ; and in walk- 

 ing, which is rather rapid, the muzzle is used to assist locomotion 

 as in Cyclostoma. The shell is carried nearly horizontally. 



The principal British habitat of Conovtdus myosotis is in brackish 

 marshes about the estuaries of rivers on the south and south-western 

 coasts. In the Thames it has been collected with Assiminea G-rayana 

 as high up as Greenwich, which fully entitles the genus to a place 

 in this work. 



3. Conovulus bidentatus. Two-toothed Conovulus. 



Shell ; fusiformly ovate, rather solid, white, covered with a light 

 horny epidermis, spire rather acuminated, 

 whorls six to seven, flatly convex, impressed 

 round the upper part ; aperture oblong- \) 



ovate, lip simple, slightly thickened within, 

 columella callous, two-toothed, one tooth 

 central and conspicuous, the other ob- 

 liquely basal and rather obsolete. 



Valuta bidentata, Montagu (1803), Test. Brit. p. 100. 

 pi. xxx. f. 2. 



Voluta alba, Turton (1819), Conch. Diet. p. 250. 



Auricula bidentata, Ferussac (1821), Tabl. Syst. p. 103. 



Volvaria bidentata, Fleming (1828), Brit. Anim. p. 333. 



Acteon bidentatus, Fleming (1828), Brit. Anim. p. 337. 



Auricula erosa and alba, Jeffreys (1830), Trans. Linn. Soc. vol. xvi. p. 369. 



K 2 



