Internal structures of the body of a clam.
Internal structures of the body of a clam, side view.
Cross section of the body of a clam, through the heart. Arrows indicate water current through the gills.
Cross section of the body of a clam, through the posterior adductor muscles. Arrows indicate water current…
Digestive and excretory organs of a clam.
The nervous system of a clam.
Young clam, still within the egg membrane. m, adductor muscle; t, hooks by which it attaches itself…
Long clam, buried in the mud. The arrows show the currents in the siphons.
Hard clam; round clam; Quahog, with foot, siphons and edge of mantle extended.
The razor shell clam has a shell somewhat resembling in shape and size the handle of a razor.
"Emarginula reticulata." -Taylor, 1904
Structure of a clam's gill. Arrows indicate water currents through the gills.
Mussel; with threads by which it is attached.
"Pecten varius." -Taylor, 1904
"Pectunculus glycimeris." -Taylor, 1904
Scallop; also known as the crusader's badge. While at rest the scallop lies on the bottom with its valves…
External features of a clam shell.
Inside of right valve of clam shell.
Clam in natural position with foot and siphons extended.
Mechanism for opening and shutting a clam shell, note the internal and external hinge ligament..
Structure of a clam shell.
"Tellina Balthica— a common marine shell in the Boulder Clays." -Taylor, 1904
"Tellina crassa." -Taylor, 1904