Page:American Seashells (1954).djvu/575

Rh Cardio7nya pectinata Carpenter Pectinate Cuspidaria Puget Sound, Washington, to Panama. M inch in length; anterior end globular, bearing 8 to 12 strong radial ribs (there may be smaller ribs between the main ones). Posterior end drawn- out like a short handle and bearing 2 to 4 weak, longitudinal riblets. Color dull-gray with a glossy, grayish white interior. Commonly dredged offshore. Consider the case of the oyster Which passes its time in the moisture. Of sex alternate. It chases no mate. But lives in a self-contained cloister. Joel W. Hedgpeth (Maryland Tideivater News September 1950)