TRIBE PECTINIDES. 267 



L. Excavata Gray Ann. Phil. 25.— Sow. Th. p. 85. t. 21./. 89. 

 — Ostrea E. Gmel. 3332.— D. p. 272.— W. t. 11./. 57.—Ch.f. 

 654. — E. t. 206./. 1. Oval, thin, ventricose, radiated by fine dis- 

 tant strife, slightly gaping on both sides, with a concave elongated 

 depression posteriorly : posterior auricles small, the anterior large. 

 5 . . 3|. Norway. 



L. Inflata Lam. — Philip, p. 77. — L. Fasciata Sow. Th. 85. 

 t.2\.f. 15,6.— Ostrea F. D. (in part) p, 269.— Lin. Sijs. 1147.? 

 —Gualt. t. 88. FF.— W. t. 10./. 50.—Ch.f. 649. a.—E. t. 206. / 

 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, i 



L. Ventricosa Sow. Th. 86./. 21./. 19. — Ostrea Fasciata. 

 Born. t. 6./ 7.— O. Glacialis Poli.t. 28. /. 19, 21. Resembling 

 the last but much more ventricose and the ribs distant and some- 

 what beaded. 2. . 1 J- Mediterranean, 



L. Rotundata. 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 L. Ventricosa, being obliquely 

 suborbicular ; the hinge is much wider also, and the beaded distant 

 ribs more coarse. 1 . . 0,9. 



L. Loscombii* Sow. G.f. 4.— Reeve Sijs. t, 112. / 4.— Sow. Th. 

 p. 86. t. 22./. 20, 1, 2. — Macgil Aberd, p. 228.— L. Bullata Turt 

 Biv. t. 17. /. 4. — Ostrea Fragilis 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 Fragilis. Sow. Th. 86. t. 22. /. 34, 5,6, 1 .— Pecten F. Ch. f. 

 650.— OstreaF. D.p. 270.— TV. t. 11. /. 2.— L Linguatula var.A. 

 Lam. 6. — L. Dehiscens Conr. Jour A.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 Linnaeus is now in Linnaeus's Cabinet, and 

 agrees with the Inflata of Lamarck. An examination of Linnaeus'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 Linnseus, who suc- 

 cessively have been possessors of this most interesting collection. 



