FAMILY 8. CONCHACEA (MARINA). 95 



PI. LXX. Fig. 6. 

 Cytherea Meroe, Sowerby, Genera of Shells, No. 33. Sowerby, Jim., 



Conch. Manual, f. 117, a. 

 Meroe picta, Schumacher. 



PI. LXXI. Fig. 1.* 

 Cytherea dione, Lamarck, Anim. saus vert., new edit., vol. vi. p. 312. 



Enc. Meth., pi. 275. f. 1 , a, b. 

 Venus dione, Linnpeus. 



PL LXXI. Fig. 2.* 



Cytherea castrensis, Lamarck, Anim. sans vert., new edit., vol. vi. 



p. 308. Enc. Meth., pi. 273. f. 1, a, b. 

 Venus castrensis, Linnseus. 



PI. LXXI. Fig. 3. 

 Cytherea erycina, Lamarck, Anim. sans vert., new edit , vol. vi. p. 303. 



Enc. Me'th., pi. 264. f. 2, a, h. 

 Venus erycina, Linnaeus. 



PULLASTRA, Sowerby. 



Testa sequivalvis, transversa, insequilateralis, latere antico breviore. 

 Dentes cardinales tres, contigui, in utraque valva, ad apicem inter- 

 dum paululiim emarginati ; laterales nulli. Impressio muscularis 

 pallii sinu magno. Ligamentum externum in fovea elongata mar- 

 ginali parti m occultatum. 



The genus Pullastra was instituted by Sowerby for the purpose of asso- 

 ciating a very natural and well-defined group of Concbacea, consisting of 

 the Venerupes and some of the Veneres of Lamarck. The former of these 

 were placed by Lamarck in the family of the Lithophaga, but it has been 



* Our figures of these species are drawn from two magnificent specimens in the possession 

 of Sigismund Rucker, Esq. 



