. The edible clams, mussels and scallops of California. Mollusks; Shellfish. Fig. 13. Panope gcnerosa. left valve. One-lTalf natviral size. Ligament external, f. Shell not markedly elongated (length not equalling three times the breadth) ; animal never moving freely up and down a permanent burrow, g. Shells not exceptionally thin nor gaping markedly at anterior end to accommodate foot, periostracum not conspicuous, no internal rib; not found in clear sand on open Fig. 14. Zirfaea gahbi. One-half natural size. Exterior left valve. h. Valves gaping widely, particularly at sip
. The edible clams, mussels and scallops of California. Mollusks; Shellfish. Fig. 13. Panope gcnerosa. left valve. One-lTalf natviral size. Ligament external, f. Shell not markedly elongated (length not equalling three times the breadth) ; animal never moving freely up and down a permanent burrow, g. Shells not exceptionally thin nor gaping markedly at anterior end to accommodate foot, periostracum not conspicuous, no internal rib; not found in clear sand on open Fig. 14. Zirfaea gahbi. One-half natural size. Exterior left valve. h. Valves gaping widely, particularly at siphonate end; pallial sinus small, not reaching over i of the way to the anterior muscle scar, not united with the pallial line; siphons united, extremely long and large, covered with thick dark epidermis. Geoduck Panope generosa p. 63 ; pi. IS , fig. 2 hh. "Valves gaping moderately; pallial sinus large, reaching i to i of the way to the anterior muscle scar, united with pallial line; siphons separate, long, without heavy epidermis. Sunset shells Psammohia i. Shell oval (about one and a half times as long as wide), umbos nearly central. P. californica p. 45 ; pi. 14 , fig. 1 ii. Shell elongated (about twice as long as wide), umbos much nearer anterior end. P. edentula p. 45. 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 Walter; California. State Fisheries Laboratory; California. Fish and Game Commission. Sacramento : California State Printing Office
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmollusks, bookyear192
