94 
JURASSIC; OR. 
We know nothing of the ears, beak, or interior. But the 
ornament is peculiar ; and as my friend Mr. Etheridge knows 
no species but P. barbatus that can be compared with it; 
I have thought it should receive a name. 
P. SABAL.-iV. Sp. 
Plate 22; fig. 11. 
A remarkable species, for which we find no good analogue 
in our Oolitic series. The ribs are rounded, and truly tripli¬ 
cate, each stronger rib being flanked by two minor ones : the 
interstices are filled by longitudinal, very fine striae, and 
crossed by close sharp lines of growth. One ear is sunk, and 
has the concentric lines. We do not know the other at all. 
Nor, if fossils were more plentiful from eternal snows, would 
the species have been named here at all. 
P. LESS.—Sow. 
Plate 22, fig. 8. 
Mineral Conch., plate 205, figs. 2, 3. 
The apical angle of the beak and the general form agree 
well with Sowerby's species from the inferior Oolite, and the 
surface markings are quite like, the minute squamose lines 
of growth, however, not being mixed with larger ones, as in 
the British fossil. I think it is merely a question of preserv¬ 
ation. 
P. cingulatuSj Sow., from the Marlstone, is like, but rounder, 
with a larger apical angle (more than a right angle—ours is 
less) and the surface polished. 
PECTEN.—Sp. 
Plate 22, fig. 12. 
Not perfect enough to identify, or worth figuring, did it 
not occur on a slab with Cardium truncation , Sow. 
