WORMS. TESTACEA. 67. Anomia. 283 
Shell dilated lunate plaited, with longitudinally ftriate grooves , 
the middle broader 
t'ound hitherto in a foflile ftateahly. . i- , 1 • 
ShtU (lightly mUricate at the fides, with longitudinal plaits} 
back of the upper valve a little prominent. 
' c * 
Shell dilated triangular plaited with wrinkled grooves, the 
middle broader. 
Uuf. Tiff, tab, 7. Lift. Aagl. t. 9./. 56. 
Found in a folTile (late in England and Swtzerland. 
Wf// nearly lunate, v/ith 5 or 6 wrinkled arched tranfverle grooves, 
the fides (lightly mucrosate: beak of the upper-valve pro- 
minent. 
Shell roundllh with numerous grooves, the_ valves plaited at 
the tip } one of them (hotter and pitted : the tip 4- 
toothed. 
Lister an, Angl. p, 249. tab. tj.ftg- 57 * . . 
Mu/, leff. ttA). 5.77?. 6 . Grew. Mu/, tab. ig./ig. o. 
Klein ostr, tab, \l./ig. 57. 
Found hitherto in a foflile (late only. 
p , 
Shell ohovate grooved \ the beak of one valve prominent, 
of the other gaping, 
Scbrirt. Einl. in conch, 3. tab, <^./ig. a, b. 
Inhabits Norwav Seas, on zoophytes. 
Shell ftnall, about the fizc of a Cucumber (eed, white nearly 
equivalve, covered with fraall ereft diibnt hairs which are 
probably a minute fpecies of fea weed, or fpunge, not retufe 
or plaited, longitudinally grooved. 
(| p 
“dhdata Shell conic pointed grooved ; one valve convex with an 
incurved beak, the other pyramidal with a large trian- 
gular foramen. 
Tran/aS. Linn. Sec Kol. 3* tab. i./igs J— “ 4 * 
Inhabits Derbyjhire, in a petrifid (late. _ 
Lower W-vf convex broad, wrought with clofe thick longitudinal 
ribs and eroded by a few (light concentric circles ; the middle 
rib much larger, forming a convex ridge down the centre ot 
the valve, increafing in breadth towards the margin in which 
place they are undulate, the number of ribs above 29 ; beak 
I fmall pointed and curved overthe binge, a ftraightline extending 
the breadth of the (hell : upper-valve pyramidal, gradually 
tapering to a fine point, the back rounded, longitudinally ribbed 
and indented with a deep concave groove, correfpondent to the 
' ridge in the other valve ; the groove and ribs crolled by a few 
^ flroug diftant wrinkles ; the front or part extending from the 
N n 2 hinge 
