CONCHYLW—VITHYRA. 24 fi 



This well marked genus, exclusively the discovery of Mbtitagu, 

 is respectfully dedicated to the learned Dr. Goodall, the Provost 

 ef Etbn. H?>-i;i' 



GooDALLiA marginc interno denticulato. tiiaujiuiari.i. 



Shell with the inner margin toothed. 



Tab.nost. 6, fig. 14. 

 Mactra triangularis. Montagu, Test. Brit. p. 99, tab. 3, fig. 5. 



Pennant, Brit. Zool. iv. p. 195. 



Linn. Trans, viii. p. 72. 



Turton, British Fauna, p. 155. 



Dil/wyn Descript. Catal. p. 143. 



Turton, Conch. Diet. p. 82. 

 Mus. nost. Western coasts and Ireland. 



Shell two lines long and three broad, sti-ong, smooth, wiiite or 

 brown, a little produced on one side, with the beaks very piomi- 

 nent ; inside white but not much glossed, and strongly toothed on 

 the margirt : iti onfe valVe a lafge cloveii tooth ; in the other two 

 small teeth with a triangular cavity between them. 



GooDALLiA margine interno integerrimo. njimiHssiina. 



Shell with tlie inner margin quite entire. 



Tab. nost. 6, fig. 1'^'- 

 MiEliCtt-a miriutissirtld. Mbiitagii. Test. Brit. SUppl. p. 37. 



Pennant, iV. p. I9t. 



DiHieyn, DeScripl. Catal. p. 143. 



Turton, Conch. Diet. p. SS. 

 Mus. nost. From Cornwall. 



