il4 
part regular and not foliaceous in texture. 
Grenus.—LIMA. 
Longitudinal, subequivalve, auriculated, slightly gap- 
ing on one side ; beaks divaricated ; hinge toothless, 
the cardinal pit partly external and receiving the 
ligament. 
L. Buruata. Turt. B. t. 17. fi 4,5.—PEcTEN 
Fracixis. Mont. Sup. p. 62.—Pen. 4. p. 223.— 
OstreEa F. Turt. D. p. 131.—Lima F. F. p. 388— 
Very convex and much curved outwards on one side with 
numerous raised longitudinal strie, which are a little 
undulated, with three or four lesser ones between each of 
them ; cardinal margin and auricles oblique. ...1. 
Devonshire and Bray in Ireland, rare. 
L. Supauricuuata. Turt. B. p. 218.—F. p. 389. 
—PrcTEN S. Mont. Sup. p, 63. t. 29. f. 2.—OstTREA. 
8. Turt. D. p. 131.—Flattish and subequilateral, a 
little unequal at one of the sides (but not so much as in 
the last) with longitudinal straight strie without lesser 
intermediate ones; auricles nearly rectilinear. 4...3. 
W. Coasts. More elongated than the last, the strie 
more remote and nearly straight. ‘ 
Grenvus,—PECTEN. 
Free, regular, tnequivalee, auriculated, dorsal line 
