. The American entomologist. Entomology. Entered, according to Act of Cong-ress. in the year 1880, by the HUB PUBLISHING Co. of N. Y-. in the office of the Librarian of Congress at Washington. '^.^ NEW YORK, NOVEMBER, 1880 No. 11. PUBLISHED MONTHLY BY THE HUB PUBLISHING CO. of n. y. 328 Pearl St., Newr York, TERMS Two dollars per annum, in advance. EDITED BY CHARLES V. RILEY, Washington, D. C. ON THE CHANGES THAT TAKE PLACE IN THE MOUTH-PARTS AND LEGS OF SOME LEAF- MINING LEPIDOPTEROUS LARV.®. By V. T. CHAMBEKS, COVINGTON, KV. In my address as President of the " Cin- cinna
. The American entomologist. Entomology. Entered, according to Act of Cong-ress. in the year 1880, by the HUB PUBLISHING Co. of N. Y-. in the office of the Librarian of Congress at Washington. '^.^ NEW YORK, NOVEMBER, 1880 No. 11. PUBLISHED MONTHLY BY THE HUB PUBLISHING CO. of n. y. 328 Pearl St., Newr York, TERMS Two dollars per annum, in advance. EDITED BY CHARLES V. RILEY, Washington, D. C. ON THE CHANGES THAT TAKE PLACE IN THE MOUTH-PARTS AND LEGS OF SOME LEAF- MINING LEPIDOPTEROUS LARV.®. By V. T. CHAMBEKS, COVINGTON, KV. In my address as President of the " Cin- cinnati Society of Natural History," {iw/. 2,p. 71 of the Journal of the Society), I have given some facts as to the metamorphoses of the mouth-parts of certain Tineid larvse; and, at the request of the editor, I submit these facts, together with some others, both upon the mouth-parts and legs of these larvae, to the readers of the American Entomologist. If we examine the mouth-parts (or trophi, as they are technically termed,) of any ordinary caterpillar, whether of the macro or micro-lepidoptera, we shall find that they consist of an upper lip or labrum; two strong jaws or mandibles; two weak jaws or maxillae; and a labium; and the maxillae and labium are each provided with a pair of feelers or palpi; in other words, it is a typical insect mouth, posses- sing all of the parts of such a mouth moderately developed. Differences in the development of the different parts in differ- ent species will be detected, but typically the mouth-parts are the same. In addi- tion to the parts above-named, the labium will be found to be armed with a spinneret which, however, with the silk glands, is believed to be only a special development of the salivary glands and duct of other larvae. Such trophi are represented in Figs. 124 and 125. In Fig. 124 the organs are extended, and in Fig. 125 they are re-. Larval head of LitkocoUetis ornatelta in seventh stage: lettered parts as in Fig. 125 (aft
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