42. 
43. 
44. 
45. 
46. 
47. 
48. 
49. 
50. 
51. 
52. 
PCs Sie a ee 
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ARCACEA. 53 
. Siculus, Reeve, Pro. Z. S. 1843 ; Conch. Icon. pl. 7. f. 41. 
Pectunculus glycimeris, var. Lamarck. 
. spadiceus, Feeve, Pro. Z. S. 1843 ; Conch. Icon. pl. 8. f. 47. 
. spureus, Reeve, Pro. Z. S. 1843 ; Conch. Icon. pl. 7. f. 36. 
. stellatas, Lamarck, Reeve, Conch. Icon. pl. 2. f. 5. 
. striatularis, Lamarck, Reeve, Conch. Icon. pl. 6. f. 27. 
. strigilatus, Sowerby, Pro. Z. S. 1832; Reeve, C. I. pl. 6. 1.3% 
. Tellineeformis, Reeve, Pro. Z. 8.1843; Con. Icon. pl. 6. f. 34. 
. tenuicostatus, Reeve, Pro. Z.S. 1843 ; Con. Icon. pl. 6. f. 35. 
. tessellatus, Sowerby, Pro. Z.S. 1832; Reeve, C. I. pl.6. f. 29. 
. violascens, Lamarck, Reeve, Conch. Icon. pl. 2. f. 9. 
Variety, Pectunculus zonalis, Lamarck. 
. vitreus, Lamarck, Reeve, Conch. Icon. pl. 8. f. 45. 
Genus IV. NUCULA, Lamarck. 
. arctica, Brod. and Sow. Zool. Journ. v. 4. p. 359. pl. 9. f. 1. 
. Belcheri, Hinds, Pro. Zool. Soc. 1844. 
. celata, Hinds, Pro. Zool. Soc. 1844. 
. eastrensis, Hinds, Pro. Zool. Soc. 1844. 
concentrica, Say, Amer. Conch. pl. 12. 
. convexa, Sowerby, Conch. Illus. f. 22. 
. costellata, Sowerby, Pro. Z.S. 1832 ; Reeve, C.S. pl. 85. f. 8. 
. crassa, Hinds, Pro. Zool. Soc. 1844. 
. crenifera, Sowerby, Pro. Z. S. 1832 ; Conch. Illus. f. 3. 
. crispa, Hinds, Pro. Zool. Soc. 1844. 
Cumingii, Hinds, Pro. Zool. Soe. 1844. 
cuneata, Sowerby, Pro. Zool. Soc. 1832; Conch. Illus. f. 15. 
. declivis, Hinds, Pro. Zool. Soc. 1844. 
. decussata, Sowerby, Conch. Illus. f. 18. 
. divaricata, Hinds, Pro. Zool. Soc. 1844. 
. eburnea, Sowerby, Pro. Zool. Soc. 1832; Conch. Illus. f. 10. 
Eightsii, Cowrthouy, Amer. Lyc. N.H; Jay, Cat. pl. 1. f. 12. 
Elenensis, Sowerby, Pro. Zool. Soc. 1832 ; Conch. Illus. f.14. 
. elongata, Sowerby, Pro. Zool. Soc. 1832 ; Conch. Illus. f. 2. 
. excavata, Hinds, Pro. Zool. Soc. 1844. 
. exigua, Sowerby, Pro. Zool. Soc. 1832; Conch. Illus. f.24. 
. fabula, Sowerby, Conch. Illus. f. 13. 
. fluviatilis, Sowerby, Genera of Shells, no. 17. f. 3. 
Arca fluviatilis, Schroeter ; Nucula rostrata, Lamarck ; 
Arca rostrata, Gmelin. 
