482 MANUAL OF THE MOLLUSCA. 
Synonyms, Psammotea (zonalis) Lamarck. Psammocola, B’, 
Gari, Schumacher. 
Fig. 262. Psammotia vespertina, Chemn, 4. Brit. 
- Example, P. Ferroénsis, Pl. XXI., Fig. 9. P. squamosa, 
Pl. XXI., Fig. 10. P. pallida, Fig. 263. PP. vespertina, 
Fig. 262. 
Shell oblong, compressed, slightly gaping at both ends; hinge- 
teeth +; ligament external, prominent; siphonal inflection 
deep, in contact with the pallial line; epidermis often dark. 
' Fig. 263. Psammobia pallida, Desh. Red Sea. Left valve, part of the mantle, and 
retractor of the siphons removed. Siphons much contracted; a, a, adductors, 
DP, Pp, pedal muscles. 
Animal, mantle open, fringed; siphons verylong, slender, 
nearly equal, longitudinally ciliated, orifices with 6—8 cirri; foot 
large, tongue-shaped; palpi long, tapering; gills unequal, 
recumbent, few plaited. 
Distribution, 50 species. Norway, Britain, India, New Zea- 
land, Pacific. Littoral — coralline zone, 100 fathoms. P. gari 
is eaten in India. 
Fossil, 55 species. Oolite? Hocene—. United States, 
Europe. 
SANGUINOLARIA, Lamarck. 
Name, from. the type, Solen sanguinolentus, Chemn. 
Synonyms, SoleteUina (diphos), Bl. Lobaria, Schumacher. 
Aulus, Oken. 
