4, 
3. 
6. 
7. 
A, 
AS 
A. 
A. 
CONCHOLOGY. 
nox. Turton Dict. fig. 58. 
fusca. Donovan, pl. 158, fig. 3. 4. 
minuta, Turton Dict. fig. 98. 
perforans. Turton, pl. 13. fig. 2. 3. 
OSTREA. 
Shell with two generally unequal valves: hinge 
without teeth, but furnished with a hollow in the 
middle, and mostly lateral transverse grooves. 
1. Ostrea maxima. Brit. Zool. pl. 62.—Dono- 
2 
3. 
4. 
2. 
= 
0. 
5 Ai 
O. 
0. 
0. 
OO° 
van, pl. 49. 
. O. jacobea. Brit. Zool. pl. 63. fig. 1.— 
Donovan, pl. 137. 
opercularis, Brit. Zool, pl. 63. fig. 2.— 
Donovan, pl. 12. 
varia, Brit. Zool, pl. 64. fig. 1.— 
Donovan, pl... fig. 1. 
.sinuosa. Brit. Zool. pl. 64. fig. 2.— 
Donovan, pl. 34, 
. lineata. Donovan, pl. 116.—Da Costa, 
pl. 10. fig. 8. 
- levis. Montague, pl. 4. fig. 4, 
. obsoleta. Brit. Zool, pl. 64. fig. 3. 
-edulis, Da Costa, pl. 11. fig. 6.—Lin, 
Trans. vol, 6. pl. 18. fig. 9. 10. 
parasitica, Turton Dict. fig. 8. 
pusio. Turton, pl. 17. fig. 2. 
tenera. Zool, Journ. 2. pl. 13. fig. 2. 
A new species, found by Dr, Turten, 
