GO^CUYLIA—DITHYRA. 34. 

 34. MYRTEA- TURTON. 



133 



Testa ovato-trigona. wquivalvis, suhwquilateralis, clausa. Cardovalvae 

 alterius dente unlro cum laterali utrinque ; alterius dentibus duobus, 

 lateralibus obsoletis. Ligamentum externum. 



Shell oval-triangular, equivalve, nearly equilateral, closed. Hinge 

 of one valve with a single tooth and a lateral one on each side ; 

 of the other valve with two teeth, the lateral ones obscure. Liga- 

 ment external. 



From the structure of the hinge in this shell, it cannot be inclu- 

 ded in any of the genera into which the original Venus tribe is now 

 divided, without a latitude of character inconsistent with the pre- 

 cision of classical arrangement. 



We have e.xamined a very fine pair, taken from the stomach of a 

 large sole ; and they exactly correspond with the description and 

 figure of Montagu. 



Myrtea. 



Venus spinifera. Montagu, p. 577- tab. 17, fig. 1. 



Pennant, Brit. Zool. iv. p. 201. 



Linn. Trans, viii. p. 78. 



Turton, British Fauna, p. 160. 



Dillwyn, Descript. Catal. p. 163. 



Turton, Conch. Diet. p. 231. 

 On the Western coasts ; very rare. 



spinifera. 



