78 TESTACEOUS MOLLUSCA. 



L. TiGERiNA. Desk.— Ye^vsT. Xm. 1133.— D. p. 191.— 

 W. t. 8./. 75.— Mont. t. 4.f. \.— Ch.f. 390, ].~E. t. 277./. 4. 

 Cytherea T. Lam. 53. Orbicular, compressed, white, witli 

 longitudinal ribs which are rather flat, very close, narrow, and nu- 

 merous, and are crossed by still closer set concentric strise ; lunula 

 minute, triangular sunken, ligament buried : within white, \\ath 

 often a tinge of rose-colour on the hinge and margin : hinge with 

 two primary teeth in each valve, a lateral tooth in one and a recep- 

 tacle for it in the other. Diam. up to 2. — West Indies. — Variety. 

 — Cyth. Interrupta. Lam. 52. The longitudinal striae only 

 on the sides, and within greenish yellow, without any rosy tinge on 

 the margin. Senegal.^ 



L. ScABRA. Gray. Ann. Phil. 25. — Tellina S. D. p. 96. 

 — Ch.f. 1943, 4.~W. t. 4.f. 72. Sub-orbicular, ventral margin 

 semicircular, dorsal straighter, convex, inflected on both sides, pos- 

 terior inflection the larger : white and strongly striated transversely: 

 hinge with one cardinal tooth, and two strong lateral ones, which 

 shut into cavities in the opposite valve. 



L. Globosa. Graij.Ann. Phil. 25.— Venus G. D. p. 202.— 

 Ch.f. 430, l.—L. t. 285. /. 1.— TF. t. 8./. 99. Sub-orbicular, 

 ventricose, pellucid, white, with obsolete transverse striae : umbones 

 rounded, slopes indistinct, niargin entire. 1^ . . LV. —Med Sea. 



L. Spinifera.— Venus .S. Mont. p. 577. t. \7.f. 1.— IF. t. 

 7,f. II.— D. p. 1G3.— Myrtea S. Tart. B. p. U^.—F. p. 

 443. Oval, subtriangular, yellowish white, with numerous fine 

 laminar equi-distant transverse ridges, which reflect a little, and in 

 both valves become anteriorly confluent in pairs, extending beyond 

 the edges, so as to form a fringe of short obtuse spines, which 

 turn back and form a cavity for the cartilage ; beak small, sub- 

 central, lunule long and narrow : in one valve a single cardinal 

 tooth, and a lateral on each side, in the other two cardinal, and the 

 lateral obscure. ^..-J-^^.— Ei^dland. 



L. Zelanica. Gray in Yates, Nem Zeal. Sub-orbicular, 

 rather compressed, rather solid, opaque, white, smooth, very slightly 

 concentrically striated, and covered with a thin smooth periostraca. 

 — New Zealand. — Like, hut more compressed and opaque than L. 

 Lactea. 



L. Sph^roides. Conr. Jour. A. N. S. Phil. 6. t. 11./. 9, 

 10. — Ch.f. 130. Globose, white ; ribs divaricating, triangular and 



1 Sowerby and Deshayes have with justice removed this shell, with 

 the preceding species, from Cytherea, the palleal scar being simple, 

 and not sinuated as in that genus : neither indeed docs it possess 

 four teeth in one valve ; though as regards the hinge I fear it is no 

 more a Lucina than it was a Cytherea. 



