138 LTTTOKINID.E. 



II. VENTROSA, Montagu. 



Elongated, smooth, lustrous, transparent, of an uniform oliva- 

 ceous tint, never pure white (when recent) : whorls ventricose, not 

 shouldered, nor abruptly enlarging : outer lip not patulous. 



Plate LXXXVII. fig. 1, 5, G, 7. 



ScHROTER, Flilssconch. pi. 8, f. 7 ? 

 Turbo ventrosus, Mont. Test. Brit. vol. ii. p. 317, pi. 12, f. 13. — Maton and 

 Rack. Trans. Linn. Soc. vol. viii. p. 164. — Rack. Dorset 

 Catalog, p. 49, pi. 18, f. 12, a. 

 Cyclostoma acutum, Draparn. Moll. France, p. 40, pi. 1, f. 2.*^ (probably), from 

 which Paludina acuta, Mich. Comp. a Drap. p. 100 ; 

 PoTiEz and Mich. Gal. Douai, Moll. vol. i. p. 244 ; Desh. 

 Anira. s. Vert. vol. viii. p. 521 ; Gras, Moll. Isere, App. 

 p. 20. 

 Ttirho veiitncosiis, Dillw. Recent Shells, vol. ii. p. 840. — AYgod, Index Testae. 



pi. 31, f. 59. 

 Paludina octona, Nilsson, Moll. Suecise, p. 92 ? 

 Cimjula veiitrlcosa, Fleming, Brit. Animals, p. 307. — Brit. Marine Conch. 



p. 180. 

 Paludina stagnomm, Turt. Manual Land and F. W. Shells, p. 136, f. 123. — 

 Gray, Manual L. and F. W. Shells, p. 95. 

 „ niuriatica, Desh. Encj'clop. Meth. Vers. vol. iii. p. 693 (probably). 

 Cingula minuta, Gould, Invert. Massach. p. 265, f. 171 ? 



Rissoa ventricosa, Macg. Moll. Aberd. p. 148. — Brown, Illust. Conch. G. B. 

 p. 12, pi. 8, f. 27. 



Our reference to continental synonyms for this species 

 is purposely limited. The P, niuriatica of Lamarck, and 

 the Turho thermalis and Helix octona of Linnseus are often 

 regarded as the original names of the few foreign shells 

 above cited. They are too obscurely defined to insure 

 identification. 



This shell is thin, smooth, shining, and of a pellucid 

 horn-colour, which has usually a tinge of olivaceous green 

 or fulvous yellow. The shape ranges from oblong-conic to 

 oblong-turreted, and is composed of six (more rarely five) 

 much rounded volutions, that are divided by a simple but 



