CONCHYLIA— D/r//Fi?^. 16. 53 



Amphidesma testa ovato-trigond, valvd altera dcnticulo Jisso et denti- tenuc. 



hus lateralibus. 

 Shell oval-triangular, with a cloven denticle and lateral teeth in one 



of the valves. 

 Mactra tenuis. Montagu, Test. Brit. 572, tab. J 7, fig. 7- 



Pennant, Br. Zool. iv. p. 194. 



Linn. Trans, viii. p. 72. 



Turton, British Fauna, p. 15.5. 



Dorset Catal. p. 33. 



Dillwyn, De.script. Catal. p. 142. 



Turton, Conch. Diet. p. 84. 

 Mus. nost. Devon, Dorset, and Hampshire coasts. 



Shell a quarter of an inch long, and rather more broad, flat, thin, 

 glossy white, with the beaks central. 



Amphidesma testa ovato-trigond, valvd alterd denticulis duobus et Boysii. 



dentibus lateralibus. 

 Shell oval -triangular, with two denticles and lateral teeth in one of 

 the valves. 



Tab nost. 5. fig. 4 and 5. 

 Mactra Boysu. Montagu, Test. Brit. p. 98, tab. 3, fig. 7. 

 Pennant, Brit. Zool. iv. p 195, 

 Linn Trans, viii. p. 72, tab. 1. fig. 12. 

 Turton, British Fauna, p. 155. 

 Dorset Catal. p. 33, tab. 12, fig. 7. 

 Dillwyn, Descript. Catal. p. 143. 

 Turton, Conch. Diet. p. 84. 



