Contributions from the Zoological Laboratory of the Museum of Comparative Zoology at Harvard College Volume 91-100 download ebook

Contributions from the Zoological Laboratory of the Museum of Comparative Zoology at Harvard College Volume 91-100 download ebook

Contributions from the Zoological Laboratory of the Museum of Comparative Zoology at Harvard College Volume 91-100.cHarvard University Laboratory
Contributions from the Zoological Laboratory of the Museum of Comparative Zoology at Harvard College Volume 91-100
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Author: Harvard University Laboratory
Page Count: 88 pages
Published Date: 12 Feb 2012
Publisher: General Books
Publication Country: Miami Fl, United States
Language: English
Format: PDF
ISBN: 9781235700408
Download Link: Contributions from the Zoological Laboratory of the Museum of Comparative Zoology at Harvard College Volume 91-100
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1808 Excerpt: ... CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF THE MUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD COLLEGE. E. L. MARK, Director. THE ANATOMY AND PHYSIOLOGY OF THE MOUTH-PARTS OF THE COLLEMBOLAN, ORCHESELLA CINCTA L. By Justus Watson Folsom. With Four Plates. Reprinted From The Bulletin Of The Museum Of Comparative Zoology. Vol. XXXV. No. 2. CAMBRIDGE, MASS., U.S.A. July, 1899. Zoology, Vol. XXXV., No. 2, July, 1809. No. 2.--The Anatomy and Physiology of the Mouth-Parts of the Collernbolan, Orchesella cincta L By Justus Watson Folsom. INTRODUCTION. The group Apterygogenea (Apterygota) of Brauer comprises two distinct groups, termed the orders Collembola (Lubbock) and Thysanura (Latreille). The Collemboln, to which Orchesella belongs, have been comparatively little studied by naturalists, owing in part, no doubt, to their being small, unobtrusive, and delicate insects. It is not surprising, in view of "the small size of the Collembola, that entomologists have described their mouth-parts imperfectly and very diversely; on the other hand, it is remarkable that so much good work has already been accomplished by dissection, unaided by the improved modern methods of technique. An excellent re'sum of preceding descriptions of the mouth-parts has been given by Lubbock ('73), to whose account, however, I shall make certain additions. Fabricius (1777) briefly mentions the palpi, mandibles, maxillae, and bifid labium of Podura, the genus in which all Collembola were originally placed. His description, especially inapplicable as regards the palpi, has been commented upon by Latreille and Lubbock. Latreille ('32), who noticed the labrum, was hardly more successful than his predecessor. His account, quoted in full by Lubbock ('73), is characterized by the latter as being " va...

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