The book Common Sea Shells of California was written by author Josiah Keep Here you can read free online of Common Sea Shells of California book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Common Sea Shells of California a good or bad book?
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Another strong, thick shell, though not so large as the last, is Saxidomus Nuttallii, Conr. , Fig. 2, PI. XIV, NuttalPs Rock-clam. It some- times grows to a length of four inches. The out- side is of a dirty white, and is marked by numerous irregular, concentric, ridges. The in- terior is white, and the thick part below the external ligament is translucent like agate. The PLATE XIV. 1 CABPET-SHELL 53 pallial sinus is very deep, and the posterior end of the shell is slightly gaping. In all the m...arkets of San Francisco may be found excellent specimens of the next species, Tapes staminea^ Conr. , Carpet-shell, shown in Fig. 3, PI. XIV. It is known among the market men as- the u Hard-shelled Clam. " Tomales Bay furnishes a good part of the supply, bulb it abounds all along the coast. The valves are rounded, full, strong, and marked by numerous narrow ra- diating ribs, which are cut by successive lines of growth. It has three strongly locked cardi- nal hinge-teeth and an external ligament ; the pallaial sinus reaches to the middle of the shell.
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