PLATE XXV. 
Fig. 1, 2, 3. ARC A No^. 
Arca Noae, Mo?d. Test. Brit. p. 139, pi. 4, fig. 3. — Lam. Syst. vi. p. 57. — Brown in Ency. Brit. vi. p. 4] 6. 
Fig. 4, 5. ARCA FUSCA. 
Arca fusca, Mont. Test. Brit. Sup. p, 51. — Donov. Brit. Sh. v. pi. 158, fig. 3, 4. — Lam. Syst. vi. p. 39- 
Fig. 6. ARCA LACTEA. 
Arca lactea. Lam. Syst. vi. p. 40 — Mont. Test. Brit. p. 138. — Brown in Ency. Brit. vi. p. 41b'. 
Fig. 7. ARCA BARBATA. 
Ahca barbata, Lam. Syst. vi. p. 39. — Brown in Wer. Mem. ii. p. 512, pi. 24, fig. 3 — Brown in Ency. Brit. vi. p. 
416, pi. 152, fig. 13 — A new species, as an inhabitant of our seas ; discovered by Dr M'Gie, Belfast, in Lough 
Strangford, county of Down, Ireland ; and in his Cabinet. 
Fig. 8, 9. PECTUNCULUS glycimeris. 
Pectunculus glycimeris. Lain. Syst. vi. p. 49. 
Arca glycimeris, Mat. and Rack, in Linn. Trans, viii. pi. 3, fig. 3. — Mont. Test. Brit. p. 136 Brown in Ency. 
Brit. vi. p. 417- 
Fig. 10, 11. PECTUNCULUS pilosus. 
Pectunculus pilosus. Lam. Syst. vi. p. 49. 
Arca pilosa, Mont. Test. Brit. p. 136. — Brown in Ency. Brit. vi. p. 417- 
Fig. l6. NUCULA rostrata. 
NucuLA rostrata. Lam. Syst. vi. p. 58. 
Area rostrata, Mont. Test. Brit. Sup. p. 55, pi. 27, fig. 7- — Brown in Ency. Brit. vi. p. 417- 
Fig. 17. NUCULA OBLONGA. 
NucuLA oblonga. Brown's MSS.— A new species, found at Saltcoats, by Stewart Ker, Esq. of Greenock. 
Fig. 18. NUCULA MiNUTA. 
NucuLA minuta, Brown's MSS. 
Area minuta, Mont. Test. Brit. p. \4\.— Brown in Ency. Brit. vi. p. 41/. 
Area caudata, Donov. Brit. Sli. iii. pi. 78. 
Fig. 19. NUCULA TRUNCATA. 
NucuLA truncata. Brown's MSS — A new species, found at Saltcoats, by Stewart Ker, Esq. 
Fig. 12. NUCULA MARGARITACEA. 
NucuLA niargaritacea. Lam. Syst. vi. p. 59. 
Arca nucleus, Mont. Test. Brit. p. 141 — Brown in Ency. Brit. vi. p. 417, pl- 153, fig. 4. 
Fig. 14, 15. NUCULA ARGENTEA. 
NucDLA argentea. Brown's MSS. — A new shell, found at Dunbar, by my friend General Bingham of Melcoiiibe, 
Dorsetshire, to whose zeal we are indebted for many new minute species. — In his Cabinet. 
Fig. 13. NUCULA TENUIS. 
NucuLA tenuis. Brown's MSS. 
Area tenuis, Mont. Test. Brit. Sup. p. 56, pi. 29, fig. 1 — Brown in Ency. Brit. vi. p. 417- 
