. Elements of zoölogy : a textbook. Zoology. 352 ARTICULATA : CRUSTACEA. FIG. 478. - Mandibles. First pair of jaws. Second pair of — Auxiliary jaws or foot-mandibles. ,- • Auxiliary jaws or foot-mandibles. Auxiliary jaws or foot-mandibles. The six pairs of locomotive appendages of a Crustacean—Craw-fish—which are modi- fied so as to constitute the masticatory apparatus. FIG. 479. saa sa bv h ha oa aa. 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 perfec


. Elements of zoölogy : a textbook. Zoology. 352 ARTICULATA : CRUSTACEA. FIG. 478. - Mandibles. First pair of jaws. Second pair of — Auxiliary jaws or foot-mandibles. ,- • Auxiliary jaws or foot-mandibles. Auxiliary jaws or foot-mandibles. The six pairs of locomotive appendages of a Crustacean—Craw-fish—which are modi- fied so as to constitute the masticatory apparatus. FIG. 479. saa sa bv h ha oa aa. 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 Tenney, Sanborn, 1827-1877. New York : Scribner


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