iIi.l.A.COZOA. TROPIOPOBA. LAMELLIBn.VNCHlATA. 269 



them, they not living in holes in rocks, but snnply in 

 sand or mud. Others have proposed as the generic 

 name Pullastra, used to designate one of the species, 

 and still more objectionable. 



1. Venerupls virginea. Virgin Rock-Venus. 



Shell ovatooblong, considerably compressed, rather thick, 

 concentrically regularly striate, with rather marked growth- 

 lines ; the anterior .slope short, with an elongated depression, 

 the posterior margin obtusely subangulate ; cardinal teeth 

 erect, two in each valve bifid ; inside smooth and glossy ; pal- 

 lia! sinus tapering : colour of the exterior yellowish-white, with 

 radiating bands of florid dots or spots ; inner surface white, 

 tinged with red or yellow toward the hinge. Length two 

 inches, height an inch and a-quarter. 



In sand along the coast, not common. Small live indivi- 

 duals sometimes brought up on the fishing-lines. Foimd at 

 Banff by Mr. Clark, on the Buchan coast by Mr. Murray, 

 at Peterhead by Mr. Gray. 



Veniis virginea. Linn. Syst. Nat. i. 1 136. — Venus virginea, 

 Penn. Brit. Zool. iv. 97. PL 55. right hand figvire. — Venus virginea. 

 Flem. Brit. Anim. 452.— Venus virginea. Turt. Brit. Biv. 1.56. PI. 

 8. f. 8.— Venus virginea. Lamk. Syst. v. 600 j Ed. 2. vi, 360.— 

 Venus virginea. Mont. Test. Brit, 128. 



2. Venerupi$ Pullastra, Pullet Rock-Venus, 

 Shell ovato-oblong, moderately compressed, rather thick, 

 divergently and concentrically striate, the divergent stria9 ob- 

 solete, the concentric striae sublamellar and somewhat waved 

 toward the anterior mai-gin ; the frontal slope short, with an 

 oblong faint depression, the posterior margin subtruncate ; the 

 three cardinal teeth in each valve close, small, erect, and 

 pointed, one only cleft ; the inner surface glossy, the pallial 

 sinus large, and rounded; the exterior dull yellowish-white, 

 subferruginous, patched with brown in irregular radiating 

 bands ; interior white, sometimes with a purple spot or patch. 

 Length two inches, height an inch and a-half 



In sand along the coast from Aberdeen to Banff; not 

 unfrequently cast ashore ; small individuals sometimes brought 

 up on the lines. 



Testa quasi rhomboides, &c. Lister, Auim. Angl. 171. PI. 4. f. 

 20. — Venus pullastra. Mont. Test. Brit. 125. — Venus pullastra. 

 Turt. Brit. Biv. 159. — Venus pullastra. Maton andRackett. Trans. 

 Linu. See. vili. 88. PI. 2. f. 7. — Veuu.s pullastra. Peun. Brit ZooL^ 



