144 
PECTEN granosus 
TAB. DLXX1Y .—fig. 2. 
Spec. Char. Nearly orbicular, oblique, convex ; 
surface marked with about thirty granulated 
rays, and as many nearly smooth ones, alter- 
nating with them ; ears undefined, unequal, 
extending nearly the width of the valve. 
Rather wider than long ; the ears, although they form 
a long hinge line, are narrow and small; the alternately 
large and small rays are very regular. 
Found in the Black Limestone in Queen’s County, 
Ireland. 
PECTEN plicatus. 
TAB. DLXXI V.—Jig. 3. 
Spec. Char. Nearly orbicular, oblique, convex, with 
numerous irregular, elevated, smooth striae ; 
ears undefined, unequal, extending the whole 
width of the sheik 
Nearly like Pecten papyraceus (tab. 354); but it has 
smaller ears, a less number of striae, and is more convex. 
From Black Limestone with the last. 
In this limestone several Pectens occur nearly resem- 
bling this : but it is difficult from such specimens as are 
to be obtained, to determine whether they be different or 
not ; we shall not at present attempt it. 
