. The edible clams, mussels and scallops of California. — 15 — Shell very thin and fragile, over twice as long as wide and gaping about equally at both ends, with conspicuous glossy periostra- cum, a marked rib on the interior of each valve extending from the umbo toward the free margin ; found in clear sand on open beaches. Razor clams Siliqua p. 50 ; pi. 15 , fig. 4. Fig. 15. Siliqua. One-half natural ff. Shell strikingly elongated (length three or more times the breadth), with hinge margin and free .margin parallel or nearly so, gaping about equally at both ends; animal moving freely up and
. The edible clams, mussels and scallops of California. — 15 — Shell very thin and fragile, over twice as long as wide and gaping about equally at both ends, with conspicuous glossy periostra- cum, a marked rib on the interior of each valve extending from the umbo toward the free margin ; found in clear sand on open beaches. Razor clams Siliqua p. 50 ; pi. 15 , fig. 4. Fig. 15. Siliqua. One-half natural ff. Shell strikingly elongated (length three or more times the breadth), with hinge margin and free .margin parallel or nearly so, gaping about equally at both ends; animal moving freely up and down a permanent burrow. Jackknife clams g. Umbo central: siphons separate, long. Tagelus califomianus p. 48 ; pi. 15 , fig. 1 gg. Umbo at extreme anterior end, siphons united. Solen h. Animal of moderate size; shell slightly curved, about 4 times as long as wide, with yellowish periostracum; foot with dark pigment. 8. sicarius p. 50 ; pi. 15 , fig. 2 hh. Animal small; shell straight, about 5 times as long as wide, with slight transparent periostracum through which the flesh color of the shell usually shows; foot with little or no pigment. 8. rosaceus p. 50; pi. 15 , fig. 3. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Weymouth, Frank W. [from old catalog]. Sacramento
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishersacra, bookyear1920
