105 
OSTREA solitaria. 
TAB. CCCCLXV111. —fig. 1. 
Spec. Char. Obovate, plaited; one valve 
flatish; plaits deep, sharp, rugged and 
branched ; beaks short. 
A. flatter, broader, and less curved shell than O. 
gregarea, (tab. 111.) it has also fewer plaits, and is not 
so commonly found in groups : it is sometimes curved, 
as one of the figures shews, but in that case it becomes 
broader rather than longer; 
We are indebted for the use of the specimens figured 
to Miss Benett, who obtained them of a Dealer at Wey- 
mouth, near which place they were picked up. 
OSTREA macroptera. 
TAB. CCCCLXVI1I .—Jigs. 2 and S. 
Spec. Char. Ealciform depressed, with a large 
rectangular ear or wing within the curve; 
plaited ; margin deeply toothed ; one valve 
attached by a great part of its surface. 
The large wing-like lobe within the curved side of this 
Oyster, gives it a very striking appearance. The valves 
are nearly flat except towards the margin, where they 
are very deeply plaited, and the edges of course largely 
