Elementary textbook of economic zoology and entomology elementarytextbo00kell Year: [c1915] zoo ECONOMIC ZOOLOGY AND ENTOMOLOGY cerebral ganglion retractor and protractor muscles of the pharynx^ (esophageal pouches-- seminal receptacles~ seminal pharynx {esophagus nephridium—T^.— gizzard—f--—.^ FIG. 37.—Dissection of the earthworm, Lumbricus sp.

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