J0KE3-BROWNE : CRETACEOUS AND EOCENE VENERID-a:. 177 



EXPLANATION OF PLATE VI. 

 Hinges of the Right Valves of some Cretaceous and Eocene Forms of 



VeNERIDjE. 



Fig. 1. — Dosiniopsis orbicularis, Edw. Copied from Deshayes' Anim. sans Vert., 



pi. xxix, fig. 11 ; natural size. 

 2. — Dosinia (Sinodia) incrassata, Sow. From a specimen in the British 



Museum ; nat. size. 

 3. — Callista {Pitaria) Parisiemis, Desh. From a specimen in the British 



Museum ; nat. size. 

 4. — Callista [Aphrodina) nitidtila, Lam. From a specimen in the British 



Museum ; nat. size. 

 5. — Callista {Macrocallista) lavigata, Lam. From a specimen in my collection ; 



nat. size. 

 6. — Tivelina tellinaria, Lam. From a specimen in my collection; nat. size. 

 7. — Tivelina {Meretrissa) depressa, Desh. From a specimen in my collection ; 



enlarged four times. 

 8. — Stmetta {Mero'ena) irig.onula, Desh. From a specimen in the British 



Museum ; nat. size. In this figure the teeth are not drawn sufiiciently 



straight and distinct. 

 9. — Cyprimeria {Cyclorisma) vectensis, Forbes. From a specimen in the 



Sedgwick Museum, Cambridge ; nat. size. 

 10. — dementia (Flaventia) ovalis, Sow. From a specimen in the Sedgwick 



Museum, Cambridge; nat. size. 

 11. — Mercimonia cythereceformis, Desh. From a specimen in my collection; 



somewhat enlarged. 

 12. — Baroda {Venerella) Hermonvillensis, Desh. Copied from Deehayes' Anim. 



sans Vert., pi. xxviii, fig. 4 ; enlarged twice. 



