64 
BRITISH MOLLUSCA. 
Lembulus (margaritacea), Sow. Conch. Man. ed.2. 1 70 (not Leach). 
Glycimeris, pari.. Da Costa, Brit. Shells. 
Polydonta (nucleus), Muhlf. Entw. 48, 1811 (not Renieri nor 
Fischer nor Blainv.). 
Pectunculus, part., Schum. Nouv. Ess. 
Area, sp., Linn. 
Tellina, sp., and Donax, sp., Gmelin. 
1. Nucula nucleus. 
Area nucleus, Linn. S. N. i. 1143 (part.); Penn. B. Z. ed. 4. iv. 
84. n. 59 (not fig.); Don. B. S. ii. t. 63, side figs. ; Mat. fy 
Rack. Linn. Trans, viii. 95; Mont. T. B. 141; Wood, Linn. 
Trans, vi. 1. 18. f. 3, 6; Turton, Brit. Faun. 161. no. 28/. 
Nucula nucleus, Forbes fy Hanley, Brit. Moll. ii. 215. t. 47. f. 7, 8; 
t. P. f. 4, animal. 
Nucula nucleus, var. /3, Loven, I. M. 34. 256 ; Forbes, M. G. S. 
i. 416. 65. 
Glycimeris argentea, Da Costa , 170. 1 . 15. f. 6, right. 
? Nucula argentea, Brown, III. C. G. B. t. 25. f. 14, 15. 
Nucula margaritacea, Lamk. H. vi. 6, 2nd ed. vi. 506 ; Leach, 
MSS. Ann. fy Mag. N. H, xx. 272 ; Brown, 111 . C. G. B. 85. 
t.33. f. 12; Philippi, Moll. Sic. i. 64, ii. 45. 
? N. erosa, Jeffreys, Conch. Mag. (not described). 
a — d. Scarborough. 
e — i. Britain. Presented by Mrs. Robinson. 
2. Nucula tenuis. 
Nucula tenuis, Turt. Biv. 177 ; Flem. B. An. 402 (not Philippi) ; 
Loven, I. M. 34. 259 ; Forbes, M. G. S. i. 417, 671, 418. f. 3 ; 
Forbes fy Hanley, Brit. Moll. ii. 223. t. 47. f. 6 ; t. P. f. 5 (ani- 
mal); Macgilliv. Moll. Aberd. 244 ; Thorpe, Brit. Mar. Conch. 
105; “ MollerV 9 Loven; Hanley, Rec. Shells, i. 171. t. 10, 
Area, f. 45; Brown, III. Conch. G.B. 85. t. 33. f. 13; Gould , 
Invert. Mass. 105. 
Area tenuis, Mont. T. B. Supp. 56. t. 29. f. 1 ; Turt. Conch. Diet. 
11; Dillw. Rec. Shells, i. 246 ; Ind. Test. 1. 10, Area, f. 45. 
Nucula tenera (foss.), S. Wood, Mag. N. Hist. 1840, t. 14. f. 2. 
a—f. Inverary. 
g — i. Britain. Presented by J. Alder, Esq. 
j — l. Britain. 
3. Nucula nitida. 
Nucula nitida. Sow. Conch. III. Nucula, f. 29. f. 31; Thorpe, M. 
Conch. 248. f. 31 ; Hanley, Rec. Shells, i. 171. t. 19. f. 44; 
Loven, I. M. 34. 258 ; Forbes Sc Hanley, Brit. Moll. ii. 218. 
t. 47. f. 9. 
