200 EOCENE MOLLUSCA. 



Lamarck, and, since his time, MM. Deshayes and D'Orbigny, have considered 

 C. lineatus as identical with C. stromboides (Lamk.), from the Paris basin. These two shells 

 do not appear to me, however, to be referable to the same species, for in the French 

 species the shell is narrower, the spire more elevated, and formed of more numerous 

 volutions ; the whorls, also, are more rounded at the shoulders, the transverse lineation 

 is feebler and more irregular, and the outer lip is more strongly arched than in the 

 English shells. I have, therefore, not cited C. stromboidss as a synonym of the presen 

 species. 



So closely does C. lineatus resemble C. scabriculus, from which, in fact, it is only 

 distinguished by its smooth, crowded, concentric lines, separated by rounded furrows, 

 that it ought, perhaps, to be regarded as merely a variety into which the smooth lined 

 specimens of the latter species would lead ; but, without an examination of Brander's 

 shell, I do not venture to question Solander's species. 



Size. — The dimensions of my largest specimen are — axis, 7-12ths of an inch; 

 diameter, rather more than 3-12ths of an inch : those of Brander's shell were, according 

 to the figure — axis, 10-12ths of an inch ; diameter, rather more than 5-12ths of an inch. 



Localities. — Barton, Bracklesham Bay. Very rare. 



Section — Conorbis. 



No. 131. Conus dormitok, Solander. Tab. XXIV, fig. 11 a — c. 



Conus dormitor, Sol. 1/66. Brand., Foss. Hanton., p. 16, t. 1, fig. 24. 



— — Sow. 1821. Min. Con., vol. iii, p. 1/9, t. 301. 



— — Morris. 1843. Cat. Brit. Foss., p. 143. 



TfOrb. 1850. Prod, de Paleont., vol. ii, p. 356, No. 338. 



— — G. Sow. . Gen. of Shells, Conus, fig. 8. 



C. testa crassiuscidd, fusiformi ; utrinque conicd, concentrice lineatd, antice sub-productd, 

 vix emarginatd, paulo retrqflexd ; lineis concentricis elevatis, aqualibus, irregularibus, sub- 

 distantibus ; interstitiis concavis, lineis incrementi tenuissime crenulatis ■■ aperturd lineari, 

 angustd; labro acuto, rotundato-elliptico, intus incrassato,postice late sinuato ; labii margine 

 anterior i elevatd, productd. 



Var. seminuda. Testa ad basin transversim sulcata; anfractibus postice unico 

 sulco exaratis, cceterum lavibus. 



Shell rather thick, fusiform, resembling two nearly equal cones, placed base to base, 

 and ornamented with concentric raised lines ; the spire, forming the shorter cone, is 

 elevated, pointed, and terminates in a very small conical pullus of three volutions; whorls 



