09. T. villiosulca, Macgillivray.—T. ovata, Brown.—Exmouth, Swansea, Bantry Bay, etc. Various depths, Mc.
Cochlodesma. Laminarian and Coralline.
10. C. prætenue, Pult.—(Mya) Anatina, Ligula, and Amphidesma pr.—Dorset, Devon, Man, Bantry B., Oban, etc., (25 to 60 fath.), R. Spoon-shaped process on hinge.
Ceratisolen. Burrows in sand.
11. C. legumen, Linn.—(Solen) Psammoiia and Solenicurtus l.—Exmouth, Swansea, Bantry, etc., C. Hinge nearly central.
Solen. Burrows perpendicularly in sand.
12. S. pellucidus, Penn.—Various British localities, 6 to 100 fath. Curved; hinge not terminal.
13. S. ensis, Linn.—Eng., Scot., Ire., generally 5 to 15 fath., C. Arched and slender.
14. S. marginatus, Pult.—S. vagina, Penn., not Linn.—Exmouth, Clyde, Cork, etc., littoral to 10 fath., Mc. Straight, with terminal constriction.
15. S. siliqua, Linn.—S. novacula, S. ligula.—Eng., Scot., Ire., many places; littoral and laminarian, C. Straight, end not constricted.