GERVILLIA. 



11 



Campiche. The specimen figured by Pictet and Roux is not sufficiently perfect to 

 enable us to state whether it is specifically identical with G. sithlduceohi fa, hut since 

 Pictet, Renevier, and Campiche were acquainted with the type and other specimens 

 of G. alpinn, and had also good specimens from Atherfield, we may feel every 

 confidence in their judgment in this matter. 



Fio. ».—GervilUa suhlanceolata {CCOxU^y). Lower Greonsand (Crackers), Atherfield. Sodgivick Museum. 

 Eiglit and loft valves of the same specimen, x J. 



A young individual of this species from Atherfield was described and figured 

 by Forbes as Avicula. lanceolata. This name, however, had previously been em- 

 ployed by Sowerby (1820) for a species from the Lias, and consequently d'Orbigny 

 altered the name of Forbes' species to Avicula sublancoolata. Goldfuss (18:30) had 

 also used the name Grrnllia Inncmlata for a species from the IMiddle Jvu-assic of 

 Wiirttemberg. Since d'Orljigny's name has priority over GerrilHa alpina of Pictet 



