CONCHOLOGY. 
awl-shaped tooth or two, not inserted into a groove 
ef the opposite valve. : 
1. Solen Siliqua. Brit. Zool, pl. 48. fig. 1.— 
Donovan, pl. 46. 
2. §. Vagina. Brit. Zool. pl, 49. fig. 1.— 
Donovan, pl. 120. 
3, S. Ensis. Brit. Zool, pl. 48. fig. 2.— 
Donovan, pl. 50. 
4, S. pellucidus, Brit. Zool. pl. 49. fig. 2.— 
Donovan, pl. 158. 
%, S. vespertinus. Brit. Zool. pl. 50. fig. 2.— 
Donovan, pl. 41. fig. 2. 
6. S. floridus. Turton, pl. 6. fig. 9. 
7. S. costulatus. Turton, pl. 6. fig. 8. 
These two last species were first described and 
figured in Dr. Turten’s bivalve shells, under his 
genus Prammobia. 
8. S. squamosus, Turton, pl. 6. fig. 1. 3. 
Lepton, 
9. S. minutus, Turton, pl. 2. fig. 12. 
10. S. antiquatus. Donovan, fig. 114. 
11, S. sebpula. Turton, pl. 6. fig. 11. 12. 
SPHENIA. 
Shell transverse, open at the anterior end : hinge 
of the left valve with an elevated transversely 
elongated tooth, of the right valve with a concave 
tooth and small denticle behind it: lateral teeth 
none : ligament internal. 
1, Sphenia binghami. Turton, pl. 3. fig. 4. 5. 
