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EOCENE MOLLUSCA. 



No. 265. Neritina consobrina, Ferussac. Tab. XXXIV, fig. 13 a, b. 



Neritina consobrina, Ftrussac. Hist, des Moll. PI. de Neritines Foss., fig. 12, 1820. 



— — Desk. Coq. foss. des Env. de Par., torn, ii, p. 153, tab. xix, 



figs. 5, 6, 1824. 



— — Id. (2nd edit. Lam.). Hist. An. sans Vert., torn, viii, p. 595, 



1838. 



— — Id. An. sans Vert, du Bas. de Par., t. cxi, p. 22, 1858. 



— — Morris. Catal. Brit. Foss., 2nd edit., p. 264, 1854. 



— — Whitaker. Mem. Geol. Surv., vol. iv, p. 579, 1872. 



— ornata 1 Melleville. Sables. Tert. Inf., p. 50, pi. vi, figs. 9, 10, 1843. 



Spec. Char. N. Testa ovato-globosd, spirdbrevi, obtusissimd ; anfractibus tribus, ultimo 

 maximo convexo, Icevigato, aperturd semilunari, area columellari latissimd, in medio tenui 

 dentatd, posterius uniplicatd, labro dextro piano. 



Diameter , \ of an inch. 



Localities. Britain : Charlton {S. Wood), Peckham {Meyer). 

 France: Lignites, Epernay (Deshayes). 



Specimens of this species do not appear to be very rare from the Woolwich beds, and 

 Mr. C. J. Meyer sent me for examination a good series of them. 



So far as I am able to determine this species, its greatest difference from globulus 

 consists in a more elevated spire and in a broad depression on the upper part of the volu- 

 tion a little below the suture. It is not so globular. The specimens from near Epernay 

 are said to have retained much of their original colour ; " sur le dernier tour on voit trois 

 zones transverses inegales, blanchatres sur un fond d'un brun noir quelquefois roussatre ;" 

 Des/i., Lamarck, 2nd edit. The specimens which I have seen, however, are of one uniform 

 colour. 



Neritina pisif or mis, Eerus., is given by Mr. De la Condamine in ' Quart. Journ. Geol. 

 Soc.,' vol. vi, p. 446, and by Mr. Prestwich, ' Quart. Journ. Geol. Soc./ vol. x, pp. 103 and 

 118, as from the Lower Eocene Beds at Woolwich and Charlton, and it is on this authority 

 inserted by Mr. Whitaker, as he informs me, in his lists in the ' Geol. Survey Memoir/ 

 pp. 576 and 579; but I have seen nothing among the specimens of my collecting 

 friends which could by that name be specifically distinguished from N. globulus or from 

 N. consobrina. Probably the shell thus referred to may have been a variety of one or the 

 other of these, unless the shell now called N.jaspidea should be the one intended. 



No. 266. Neritina vicina ?, Melleville. Tab. XXXIV, fig. 15 a, b. 



Neritina vicina, Mellev. Mem. Sables Tert. Inf. du Bas. de Par., p. 51, pi. vi, 

 figs. 11, 12, 1843. 



— — Whitaker. Mem. Geol. Surv., vol. iv, p. 579, 1872. 



