PLATE CXXXVII. ^ 



that circumstance, is supposed to be the same species as was formerly- 

 worn by pilgrims, who visited tlie holy-land. Da Costa received it 

 from Scarborough in Yorkshire, and also from the coasts of Cornwall 

 and Dorsetshire. Dr. Pultney remarks, that it is rare on the Dorset- 

 shire coast, but has been fished up at Weymouth and at Poole. 



The upper valve is of a reddish brown, flat, and rather depressed 

 at the beak : the depression is generally white, and mottled, or other- 

 wise marked with brown, or dusky red ; and often with prettily dis- 

 posed marks, resembling the heads of arrows. The under valve is 

 usually white, or faintly tinged with brown, and has the rays re- 

 markably prominent and angular ; a character by which it may be 

 easily distinguished from the Common Scallop, Ostrea maximaf 

 which greatly resembles it, but in which the rays are rounded. 



