BRITISH MOLLUSCA. 
99 
2. Diplodonta. 
Mysia, part. (rotundata), Leach , MSS. 1818, Ann. SfMag. N. H. 
xx. 272; Brown , III. Conch. G. B. 18 27; Conrad , TerL Foss. 
30, 1838; Gray, £yw. B. M . 1840; P. Z. <S. 1847, 195; Menke, 
Syn. ed. 2. 112, 1830; DesA. F. M. iii. 593. 
Psammobia, sp., Fleming, B.A. 438. 
Diplodonta, sp. (rotundata), Philippi, Sicil. i. 31, 1836, ii. 24, 
1844 ; Forbes Sf Hanley, Brit. Moll. ii. 66. 
? Egeria, sp.. Lea, Contrib. Geol. 49, 1833. 
Loripes, sp., Cuvier, R. A. 
Diplodonta (Lupinus), Bronn, Ital. Tertiargeb. 9, 1831 ; Leth, 
962, 1838 ; Nyst, Coq. Foss. Belg. 138, 1846. 
? Spbaerella (subreflexa), Conrad, Tert. Foss. 1838. 
1. Diplodonta rotundata. 
Tellina rotundata, Mont. T. B. 71. t. 2. f. 3 ; Linn. Trans, viii. 56 ; 
Dorset Cat. 30. t. 5. f. 8 ; Turt. Conch. Diet. 176 ; Brit. Faun . 
151. no. 214; Wood, Gen. Conch. 187; Dillw. Rec. Shells, i. 
99 ; Ind. Test. t. 4. f. 77 . 
Psammobia rotundata, Flem. B.A. 438. 
Lucina lactea?, Desh. E. M. Vers, ii. 374. 
Lucina rotundata, Turt. Biv. 104. t. 7* f. 3 ; Thorpe, Brit. Mar . 
Conch. 73; Desh. Exp. Moree; Brown, III. Conch. G.B. 98. 
t. 40. f. 11; Hanley, Rec. Shells, i. 76. 
Tellina undata, Pulteney, Dorset, 30. 
Mysia undata, Leach, MSS. 1818. 
M. rotundata, Brown, III. C. t. 16. f. 11. 
M. Montagui, Leach, MSS. 1818, Ann. Sf Mag. N. H. xx. 1847, 
272 . 
Diplodonta rotundata, Philippi, Sic. ii. 24 ; Forbes Sf Hanley, 
Brit. Moll. ii. 66. t. 35. f. 6 ; t. M. f. 7, animal. 
D. dilatata, Philippi, i. 31. t. 4. f. 7- 
Loripes rotundata, Cuv. Reg. An. ed. Croch. t. 103. f. 4. 
Venus fragilis (fossil), Nyst Sf West, Bull. Brux. vi. 401. t. 3. 
f. 11. 
a — e. Tenby. 
f—j. Dublin Bay. Presented by T. Warren, Esq. 
k, l. Bantry Bay. 
m. Ditto. Presented by Miss Warne. 
n — t. Tenby. 
3. Thyatira. 
Thyatira, part, (flexuosa), Leach, MSS. 1818, Ann. Sf Mag. N. H . 
xx. 1847, 272 ; Jeffreys, Conch. Mag. 
Thyasira (flexuosa), u Leach,” fide Lamk. Hist. vi. 492, 1818, 
ed. 2. vi. 228; Gray , P. Z. S. 1847, 195. 
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