76 TESTACEOUS MOLLUSCA. 
102.—Ch. f. 129.—E. t. 285. f.4.—W. t. 4. f. 87.— Wood. G. 
C. t. 46-7. 6. Sub-orbicular, very convex, white, strong, and sub- 
diaphanous ; the two sides striated obliquely in Hoes directions 
so as to form an obtuse angle where they meet. Diam. #.—Variety. 
—Tetuina Dentara. Wood. G. C.t. 46. f. 6.—D.p. 103. The 
upper part of the margin, particularly the posterior, strongly den- 
tated, the rest serrated, the concentric strize with serrated edges, the 
waved striz finer and closer.—S. America and the Mediterranean.! 
L. Muricatra.—L. Scaspra. Lam. 9.—Tevuina M. D. p. 
98.—Ch. f. 1945, 6.—E. t. 285. f.5.—W. t. 4. f. 73. Orbicular 
rather flat, white, diaphanous, with small radiating scaly ribs ; 
hinge with two cardinal teeth in each valve, and two lateral ones 
which shut into opposite cavities: within with impressed dots. 
Diam. 1.—TZerra Firma.? 
L. Savamosa. Lam. 11.—2L. t. 285. f. 3.—Tenuima~Reticv- 
LATA. Polit: 20-f.14. Sub-orbicular, tumid, equilateral, with 
small radiating imbricated and scaly ribs ; both depressions sunken. 
1.—Mediterranean. 
- LU. Lactea.* Lam. 12.—Turt. B. p. 112. t. 7. f. 4, 5.—Am- 
poipesMA L. Lam. 3.—Tevuina L. Lin. 1119.—D. p. 99.— 
Mont. t. 2. f. 4.—Ch. f. 125.--Lorires L. Bl. t. 72. f. 1. Or- 
bicular gibbous, white, diaphanous, nearly equilateral, irregu- 
larly striated concentrically ; beaks tumid and hooked, a small 
depression on the posterior slope : hinge with the teeth indistinct, 
two teeth in one valve, and one in the other, besides a linear mar- 
ginal groove for the hgament. Diam. 3.—urope. 
L. Rorunpara. Turt. B.t. 7. f.3.—Tetuina R. Mont. p 
71.t.2. f. 3.—W. t. 4. f. 77. Nearly orbicular, convex, with 
numerous indistinct concentric striz, thin semi-pellucid, white and 
moderately glossy, beaks a little inclining ; hinge with two teeth in 
each valve, of which the larger one is bifid and slightly diverging. 
Diam. 3?.—FHngland. 
L. Unpata.* Lam. 13.—Turt. B. p.115.—Venvus U. Pen. t. 
58. f. 5.— D. p. 197.—Don. 4. t. 121.—Lin. Trans. 6. t. 17. f. 
17, 8.— W. t. 8. f. 87. Thin, sub-orbicular, convex, sub-equila- 
teral, semi-transparent yellowish or brownish white, somewhat 
wrinkled transversely, and slightly flexuous at the margin; no 
1L. Carnaria. Lam. 8. is a Tellina.—Deshayes. 
2L. Retrcuvrara. Lam. 10. Orbicular, depressed, convex, 
whitish, with concentric distinct lamellae and longitudinal striz in 
the interstices ; cardinal teeth strong, one of the lateral very ap- 
proximate.— France. For this species Ch. f. 118. and Trans. 
Lin. 8. t. 1. f. 9.? are referred to ; both MAPA Le IO a variety of 
Pellina-Crassa. 
