154 



CONCHYLIA—DITHYRA. 36. 



•1 



nnosa. 

 If. 



Venus tesid ovato-orbiculari, mm longitudinali ah umhmiibus, 



striis transversis planatis lotigitudinalibusque obsolelis. 

 Shell roundish.oval, with a longitudinal sinuosity from the beaks, 

 and flat transverse striae and obscure longitudinal ones. 

 Tab. nost. 10, fig. 9. 

 Venug sinuosa. Pennant, iv. p. 213, tab. 58, fig, 4. 

 Turton, Linn. Syst. iv. p. 227. 

 Montagu, Test. Brit p. 120. 

 e Linn Trans, viii. p. 90. 



Turton, British Fauna, p. 158. 

 Turlon, Couch. Diet. p. 218. 

 Mus. nost. From Dublin bay. 



Shell five eighths of an inch long, and about as much broad« 

 rounded at both the sides, but much longer or deeper at the 

 anterior one, and produced at the other, with a rather oblique 

 indenture from the beaks to the margin which is a little irregu- 

 lar: beaks nearly central, with a heart-shaped slightly carinate 

 areola under them ; inside rich glossy yellow: in one valve two 

 of the teeth are cloven, and one in the other. 



This singular shell seems nearest to approach to the Venus 

 virginea, but the transverse stiiae are crossed by fine longitu- 

 dinal ones. From Venus decussata. and V. Pullastra it diflers, 

 in not bavins the striae more strongly decussate at the anterior 

 side; and from the Veaerupis perforans in the teeth being exactly 

 characteristic of its genus, and not erect and parallel. 



anrea. 

 17. 



Venus _ testa ovato-cordatd, lateribus fleclivis, medio tumido, 

 striis tratisversis crebi-is longitudinalibusque obsolelis, dente 

 medio Jisso. 



