TRIBE PECTINIDES. 267 
L. Excavata Gray Ann. Phil. 25.—Sow. Th. p. 85.t. 21. f. 89. 
—Osrtrea E. Gmel. 3332.—D. p. 272.—W. t. 11. f. 57.—Ch. f. 
654.—E. t.206.f.1. Oval, thin, ventricose, radiated by fine dis- 
tant striz, slightly gaping on both sides, with a concave elongated 
depression posteriorly : posterior auricles small, the anterior large. 
5..33. Normay. 
L. Inrrata Lam.—Philip. p. 77.—L. Fasctata Sow. Th. 85. 
1.21. f. 15,6.—Osrrea F. D. (in part) p, 269.—Lin. Sys. 1147.? 
—Gualt. t. 88. FF.—W. t. 10. f. 50.—Ch. f. 649. a.—E. t. 206. f. 
5. (bad) Thin, ventricose, obliquely oval, hinge margin with a 
single plait under the auricles; hinge area small: anterior side 
widely gaping : posterior with a slight gape near the ventral margin: 
auricles acute, the posterior small: ribs numerous and angular. 
1,40..1,17. Mediterranean. 1 
L. Ventricosa Son. Th. 66.t. 21. f. 19.—Ostrea Fascrata. 
Born. t. 6.f.7.—O. Gractauis Poli. t. 28. f. 19,21. Resembling 
the last but much more ventricose and the ribs distant and some- 
what beaded. 2..12 Mediterranean. 
L. Rorunpata. Sow. Th. p. 86. t. 21. f. 19. Extremely like 
Fasciata but less oblique and more ventricose, much shorter from 
the apex to the ventral margin than LZ. Ventricosa, being obliquely 
suborbicular ; the hinge is much wider also, and the beaded distant 
ribs more coarse. 1..0,9. 
L. Loscomsu* Sow. G. f. 4.—Reeve Sys. t, 112. f. 4.—Sow. Th. 
p. 86.t. 22. f. 20, 1, 2.— Macgil Aberd, p.228.—L. Buttara Turt 
Biv. t. 17. f.4.—Osrrea Fraciuis Turt. Die. p. 131. Thin, 
ventricose, obliquely oval, most minutely striated, with the anterior 
ventral margin slightly angular ; scarcely any hiatus at the sides : 
auricles small and acute: area of the hinge small. 0,62..0,50. 
Britain. 
L Fracgitis. Sow. Th. 86. t. 22. f. 34, 5,6, 7.—Prcten F. Ch. f. 
650.—OstreEAF. D.p. 270.—W.t. 11. f. 2.—L Linevaruta var.A. 
Lam.6.—L. Deuiscens Conr. Jour 4.N.S. Philad. Thin, rather flat, 
obliquely elongated, widely gaping on both sides; smooth at the 
sides, with the central ribs small distant and slightly angulated ; 

1 Mr. Sowerby, from whose excellent monograph of Lima we have 
chiefly compiled this genus, has (we fear) erroneously stated that the 
type of Ostrea Fasciata of Linnzus is now in Linnzus’s Cabinet, and 
agrees with the Inflata of Lamarck. An examination of Linnzeus’s 
Catalogue of his own collection, proves that he did not possess the O. 
Fasciata. The specimen of Inflata which is now there, has probably 
been introduced by Sir. J. Smith or the younger Linnzus, who suc- 
cessively have been possessors of this most interesting collection. 
