. A manual of zoology. PHYLUM ARTHROPODA 243 merit. Intermediate conditions also occur. In the Hyrae- noptera (bees, wasps, etc.), for example, the mouth-parts are adapted both for biting and for licking and sucking; the mandibles and maxillae are sharp and lancet-like, the middle part of the labium is produced into a long median tongue, at the sides of which are a pair of accessory tongues {para-. Fig. 142.—Mouth-parts of the Cockroach. Ibr, labrum; ind, mandible; mxlr an- terior pair of maxilla;; m, mentum; me and mi, outer and inner divisions of the second pair of maxillae; //, labial palp:

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Image ID: PG0R0D
. A manual of zoology. PHYLUM ARTHROPODA 243 merit. Intermediate conditions also occur. In the Hyrae- noptera (bees, wasps, etc.), for example, the mouth-parts are adapted both for biting and for licking and sucking; the mandibles and maxillae are sharp and lancet-like, the middle part of the labium is produced into a long median tongue, at the sides of which are a pair of accessory tongues {para-. Fig. 142.—Mouth-parts of the Cockroach. Ibr, labrum; ind, mandible; mxlr an- terior pair of maxilla;; m, mentum; me and mi, outer and inner divisions of the second pair of maxillae; //, labial palp: pm, maxillary palp; st, stipes; sm, stibmentum. (From Lang's Comparative Anatomy.) glossce). In the Hemiptera (bugs, lice, etc.) the labium is modified to form a sucking proboscis enclosing the stylet- like mandibles and maxillae. In the Diptera (house-flies, gnats, etc.) the mandibles,. 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 work.. Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.