134 LITTORINlDJi. 



Philippi represents tlie animal as having a prominent 

 emarginated muzzle, flanked by two obtuse somewhat 

 triangular tentacles, with eyes on the external bases, and 

 not on bulgings at the sides of their bases ; the foot very 

 short and rounded at the ends ; the colour whitish. Such 

 an animal certainly is much more nearly allied to Trunca- 

 tella tlian to Rissoa. In the same volume of Wiegmanr^s 

 Archiv. (vol. vii. pt. 1, 18^1) Dr. Louis PfeiiFer constitutes 

 his genus Paludindla. (T. minuta, ovata vel depressa ; 

 apertura ovata ; peristoma simplex, subcontinuum ; oper- 

 culum spiratum) for Philippi's shell, and not for the 

 Rissoce of the ulv^ group, as the name has been cited 

 usually. 



El. ANATiNA, Draparnaud. 



Abbreviated ovate-conic, thin, smooth, of an uniform pale olive 

 colour. Body at least equal to the spire ; whorls ventricose, 

 shouldered above. Suture profound. Mouth very large : pillar- 

 lip narrow, reflected, flanked by an umbilicus. 



Plate LXXXVII. fig. 3, 4. 



Cyclosloma anatinum, Drap. Moll. Terr, et Fluv. France, p. 37, pi. 1, f. 24, 25 



(probably). 

 Puludina anatina, Michaud, Conipl. a Drap. Moll. France, p. 100 (from last). 



■ — Alder, Magaz. Zool. and Bot. vol. ii. p. 116. — 



PoTiEZ and Mich. Galerie Douai, Moll. vol. i. p. 160. 



— Desh. Lam. Anim. s. Vert. (ed. Desb.) vol. viii. 



p. 521 ?— Gras, Moll. Fluv. et Terr. Isere, App. p. 20. 

 Liitorina „ Gray, JVIanual Land and F. W. Shells, p. 87. — Brit. Marine 

 Conch, p. 258. 



Neither the figure nor the description in Draparnaud's 

 work positively demonstrates the identity of this British 

 shell with the anatinum of that writer ; the present shell, 

 however, is generally accepted as the anatinum of authors ; 

 and the little discrepancies probably result from the rude- 



