64 
P. Ferroensis. Lam. 2.—Turt. B.p.94. ¢. 8. f. 1. 
Ff. p. 438.—Trviina F. Gmel. 3235.—Born. t. 2.7. 
5.—Ilnst. €. 394. f. 241.—D. p.77.—Mont. p. 55.— 
Inn. T. 8. p. 49.—Dor. Cat. p. 49. t. 6. fi 1.— 
Wood. G. C. p. 164. t. 45. f. 1.—Turt. C.D. p. 171. 
—Da Cost. p. 209. ¢. 14. f. 1.—T. Trrvascrata. 
Don. t. 60.—Oblong, compressed, subequilateral, 
striated, transparent, and decussated on the flattened 
anterior slope which is subtruncated at its extremity 
and defined by a slight elevation in both valves; pale 
red with paler rays: inside white. %...2. Western 
and other coasts. 
Gunus.—SANGUINOLARIA. 
Transverse, somewhat oval, slightly gaping at the late- 
ral extremities; upper margin arched and not 
parallel to the inferior one: hinge with two ap- 
proximate teeth in each valve. 
S. Rueosa. Lam. 4.—S. Deriorata. F. p. 461.— 
PsammoBia D. Turt. B. p. 93.—VeEnvus. D. Lin. 
1133.—D. p 186.—Ch. f. 79 to 86.—H. M. t. 231. 
Ff. 3.—Pen. 4. p. 96. t. 57. f. 54.—Mont. p. 123. 
t.3. f. 4.—O. VersicoLor and PurpurEA. Gmel.— 
Ovate-oblong, ventricose, with strong longitudinal and 
fine transverse wrinkles becoming cvarser.at the ante- 
rior end which is generally more or less stained with 
