PLATE LX. 



This elegant species is rather uncommon upon our coasts. Da 

 Costa says he received it from Scarborough, in Yorkshire ; and adds, 

 it is scarce on the coasts of Cornwall, but of a larger size ; the finest 

 coloured specimens we have seen are from Dorsetshire and Wales. 



The Tellina incarnata is smaller than trifaciata but very similar, 

 and may be easily confounded with it, 



