. The edible clams, mussels and scallops of California . Fig. 11. Chione succhictd. One and one-third times natural size. (A) Exterior anterior end. (B) Interior right valve. 11. Concentric ridges heavier and less numerous, ribs at pos- terior end more distinct than elsewhere but not more conspicuous than ridges. C. succincta p. 37 ; pi. 9 , figs. 3, 4 lih. Ligament internal, valves lighter, tliin and sharp at edges. Size modei-ato or large, pallial sinus reaching 5 to i distance to anterior muscle scar. Dish shell Spisiila p. 54 dd. .\ninial asymmetrical with valves unlike especially at sipbo
. The edible clams, mussels and scallops of California . Fig. 11. Chione succhictd. One and one-third times natural size. (A) Exterior anterior end. (B) Interior right valve. 11. Concentric ridges heavier and less numerous, ribs at pos- terior end more distinct than elsewhere but not more conspicuous than ridges. C. succincta p. 37 ; pi. 9 , figs. 3, 4 lih. Ligament internal, valves lighter, tliin and sharp at edges. Size modei-ato or large, pallial sinus reaching 5 to i distance to anterior muscle scar. Dish shell Spisiila p. 54 dd. .\ninial asymmetrical with valves unlike especially at sipbonate end; shell usually thin and weak particularly at margins (least marked in Semele and TeUiva) ; siphons separate, slender and very long: forms deeply bur- rowing in sand or mud where they are found lying on the side, e. Ligament wholly external ; pallial sinus united with pallial line ; shells generally thin, f. Shell elongated (about twice as long as wide), periostracum not con- spicuous, shell not conspicuously thin, whitish with fine but very distinct and regular growth lines, siphonate end bent to the right. Tellen TrUina bodegensis p. 42 ; pi. 11 , fig. 1
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmollusks, bookyear192
