BRITISH MOLLUSCA. 
73 
Thracia convexa, Couthouy, Boston Journ. N. H. ii. 140 ; Thorpe , 
M. C. 24 = Loven, 46. 320; Thomp. Rep. Brit. Assoc. 1843, 
263; Brown, III. Conch, ed. 2. 110. t. 44. f. 3 ; Hanley, Rec. 
Shells, 22 ; Forbes Sf Hanley, Brit. Moll. i. 229. t. 16. f. 1, 4. 
Ligula distorta, Mont . Test. Brit. Supp. 166 (not original species); 
Ferussac, Diet. Class. H. N. ; Gray, Ann. Phil. 1825. 
? Mya declivis, Don. B. S. t. 82. 
Thracia declivis, Macgilliv. Moll. Aberd. 296 ; Forbes, M. G. S . 
i. 409. 17. 
a — c. Salcombe Bay and Plymouth Sound. 
d. Belfast Bay. Presented by R. Hyndman, Esq. 
e. Lyme Regis. Presented by Mrs. Corrie* 
f. Britain. Presented by Mrs. Robinson. 
5. Thracia distorta. 
Mya distorta, Mont. T.B. 42. t. 1. f. 1 (not Supp.)', Finn. Trans. # 
viii. 37; Turton, Diet. 101; Brit. Faun. 147. no. 186; Wood, 
Conch. 98; Cat. t. 2. f. 15; Dillw. R. S. i. 45; Penn. Brit. 
Zool. ed. 1812, iv.161.no. 5. 
Amphidesma distortum, Flem. B. A. 432; Ferussac, Diet. Class. 
H. N. 
Anatina distorta. Gray, Ann. Phil. 1825; Turt.Biv. 48. t. 4. f. 5; 
Thorpe, Mar. Conch. 43 ; Hanley, Rec. Shells, 23 ; Brown, III. 
Conch, ed. 1. 1. 11. f. 7. 
Thracia distorta, Leach, MSS. 1818, Ann. Sf Mag. N. H. xx. 
1847, 272 ; Loven, I. M. 46. 322; Brown, III. Conch, ed. 2. 
1 10. t. 44. f. 7 ; Thomps. Rep. Brit. Assoc. 1843, 263 ; Forbes Sf 
Hanley, Brit. Moll. i. 231. 1. 17- f. 1, 2, 3, 8, & t. PI. f. 5 (animal). 
Anatina ovalis. Brown, III. C. t. 11. f. 4 (regular). 
Anatina rupicola Lamk. Hist. ed. 2. vi. 80 ; Deless. Rec. Cog. 
t. 3. f. 4 ; Blainv. Man. 564. 
Osteodesma rupicola, Blainv. Man. 661. 
Rupicola, Fleur, de Bellev. 
Thracia Turtoniana, Recluz, Rev. Zool. 1845, 414. 
a — s. Britain. Mus. Mont. ? 
Var. 
Anatina truncata, Turt. Biv. 46. t. 4. f. 6 (var.) ; Thorpe, Mar . 
Conch. 41; Hanley, Rec . Shells, i. 48. 
Amphidesma truncatum, Flem. B. A. 431. 
Thracia truncata, Brown, III. Conch, ed. 2. 110. t. 42. f. 28. 
Thracia distorta, var., Forbes Sf Hanley, Brit. Moll. i. 231. 
3. Magdala. 
Magdala (striata), Leach, MSS. B. M. 1818, Ann. Sf Mag. N . H. 
xx. 1847, 272; Brown, III. Conch . G.B. 1827. 
D 
