. Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. THE MOUTH-PARTS OF THE THYSANOPTERA. BY H. G ARM EXPLANATION OF FIGURE. Front (ventral) view of the head of Limothrips cerealium Haliday (to some extent diagrammatic). 1, compound eyes; 2, radiating part of endocraniam at base of right eye; 3, bar which connects the same of leftside with edge of epicranium; 4, mandible of left side, repre- sented more enlarged at right of figure; 5, rudimentary mandible? of right side; 6, clypeus; 7, labrum; 8, galea? of maxilla; 9, lacinia? of maxilla; 10, maxillary palpus. F
. Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. THE MOUTH-PARTS OF THE THYSANOPTERA. BY H. G ARM EXPLANATION OF FIGURE. Front (ventral) view of the head of Limothrips cerealium Haliday (to some extent diagrammatic). 1, compound eyes; 2, radiating part of endocraniam at base of right eye; 3, bar which connects the same of leftside with edge of epicranium; 4, mandible of left side, repre- sented more enlarged at right of figure; 5, rudimentary mandible? of right side; 6, clypeus; 7, labrum; 8, galea? of maxilla; 9, lacinia? of maxilla; 10, maxillary palpus. For some time the writer has been familiar with a pecu- liarity in the mouth-parts of members of this group of in- sects which is without a parallel among other insects known to him, and is so extraordinary that some hesitation is (24). 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 Essex Institute. 1n. Salem, Mass. , Essex Institute
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