Hardwicke's Science-Gossip; An Illustrated Medium of Interchange and Gossip for Students and Lovers of Nature Volume 10
Hardwicke's Science-Gossip; An Illustrated Medium of Interchange and Gossip for Students and Lovers of Nature Volume 10

Hardwicke's Science-Gossip; An Illustrated Medium of Interchange and Gossip for Students and Lovers of Nature Volume 10 by U S Government
Hardwicke's Science-Gossip; An Illustrated Medium of Interchange and Gossip for Students and Lovers of Nature Volume 10
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Author: U S Government
Number of Pages: 24 pages
Published Date: 22 Jan 2013
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
Format: PDF
ISBN: 9781234369552
File size: 15 Mb
Download Link: Hardwicke's Science-Gossip; An Illustrated Medium of Interchange and Gossip for Students and Lovers of Nature Volume 10
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1874-01-01 edition. Excerpt: ...palpi, will next claim our attention. The former are, I believe, represented by two stout joint-like pieces on each side of the mentum from which the four jointed palpi spring. I confess it was some time before I could understand these organs at all, and I feel I must even now speak diffidently on the subject. If the reader will turn again to Mr. Lowne's description of the mouth of the Carpenter Bee in the number for Oct. last, he will find the maxilla? of that insect described as follows: --" Each consists of a large outer knife-shaped lobe mx, strengthened by a prominent rib along its inner margin; of a small inner lobe densely covered with sensory hairs tiixr; of a basal sheath mxb, and a rudimentary palpus mxp." Now I think that the minute horny rods before alluded to as existing in the integument on each side of the labrum in the fly, are homologous to the more highly developed and "knife-shaped lobes" of the maxilla? of the bee; that the jointlike basal pieces of the fly are the homologues of the "small inner lobes," and the "basal sheaths" of the bee, the palpi, which are so enormously developed in the former insect, being reduced to mere rudiments in the latter. My reasons for this opinion have been already alluded to when speaking of the labrum, and I will only now ask the reader to accept this explanation in default of a better. Lowne's " Anatomy of the Blow-fly," p. 47. The maxillary palpi originate from the maxilla; just described. They are very prominent objects, being relatively much larger than the same organs in most other insects. They are directed forwards and slightly upwards, and consist of four joints each, the last being nearly as long as the three first...

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