CONCHOLOGY. 
V. exoleta. Brit. Zool, pl. 57. fig, 3.— 
Donovan, pl, 42. 
V. decussata. Brit, Zool, pl. 6. fig. 2.— 
Donovan, pl. 67. 
V. pullastra. Lin. Transactions, vol. 6. pl. 
17. fig. 13. 14. 
V. perforans. Montague, pl. 3. fig. 6 
V. virginea. Brit. Zool. pl. 58. fig. 5.— 
Lin, Trans, vol. 8. pl. 2 and 3. 
15. V. scotica. Turton, pl. 11. fig.3. Crassina, 
V. spinifera. Montague, pl. 17. fig. 1. 
V.triangularis. Turton, pl. 11. fig. 19 
20. Cyprina. 
V.reflexa. Turton, pl. 10. fig. 1.2 
V.laminosa,. Turton, pl, 10. di 4 
V. pallida, Turton, pl. 10. fig. 5 
A new species, found by Dr. Teuton 
21. V. ovata, Turton, pl. 9. fig. 3. 
- V. aurea. Turton, pl. 9. fig. 7. 8. 
- V.minima, Montague, pl. 3. fig. 3 
ARCA. 
Shell with numerous teeth in the hinge, alternately 
jocking within each other. 
J. Arca pilosa. Brit. Zool. pl. 61. fig. 1.— 
Donovan, pl. 37. 
2. A. lactea, Brit, Zool, pl. Gl. fig. 2.— 
Donovan, pl. 135, 
3. A. nucleus. Donovan, pl, 68.—Da Costa, 
pl. 15. fig. 6, 
