Download pdf Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26
Download pdf Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26
Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 by Lloyd Library and Museum
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Author: Lloyd Library and Museum
Page Count: 160 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130929799
File size: 33 Mb
File Name: Bulletin.of.the.Lloyd.Library.of.Botany,.Pharmacy.and.Materia.Medica.Volume.20-26.pdf
Download Link: Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26
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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. 1912 Excerpt: ...sub-anal lobe. The cerci are about half as long as the body, not including the antennae. They gradually taper backward and are attached at base between the supra-anal lobe and the sub-anal lobes. The number of segments is not constant and is about thirty-one in each. The basal segment is large and the following segments gradually increase in length to the tip, each with a whorl of bristles around its distal end. 9 In N. venosa it is broadly rounded out behind to conceal the anterior half of the eighth sternite, while in N. sinuata it is merely enlarged but not produced backward at all. 10 In N. venosa they are entirely exposed and the eighth sternite is provided with scattered chitinous patches. In N. sinuata they are also exposed and they form together a crescent-shaped chitinous area on the eighth sternite. 11 In N. venosa the ninth sternite is triangularly produced forward to reach the posterior margin of the vaginal valves and to conceal the posterior half of the eighth sternite. The black spots are wanting. In N. sinuata it is rounded out in front to be slightly overlapped by the vaginal valves. The black spots are also wanting. 4. The Development Of The Genitalia. During the first eight instars, the sexes of the naiads can not be distinguished by external characters. Later on, the genital parts of the adult can be seen to develop gradually beneath the semi-transparent skin of the naiad. The Male. Beginning with the ninth instar, a median invagination takes place in the male between the ninth and the tenth sternites, and it continues to develop inward and forward to form the ejaculatory duct. In the fourteenth instar. the supra-anal lobe begins to develop from the posterior border of the tenth tergite, and the supra-anal process gradually recurves upwa...
Read online Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 Buy and read online Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 Download and read Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 for pc, mac, kindle, readers Download to iPad/iPhone/iOS, B&N nook Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26
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Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 by Lloyd Library and Museum
Author: Lloyd Library and Museum
Page Count: 160 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130929799
File size: 33 Mb
File Name: Bulletin.of.the.Lloyd.Library.of.Botany,.Pharmacy.and.Materia.Medica.Volume.20-26.pdf
Download Link: Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26
---------------------------------------------------------------
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. 1912 Excerpt: ...sub-anal lobe. The cerci are about half as long as the body, not including the antennae. They gradually taper backward and are attached at base between the supra-anal lobe and the sub-anal lobes. The number of segments is not constant and is about thirty-one in each. The basal segment is large and the following segments gradually increase in length to the tip, each with a whorl of bristles around its distal end. 9 In N. venosa it is broadly rounded out behind to conceal the anterior half of the eighth sternite, while in N. sinuata it is merely enlarged but not produced backward at all. 10 In N. venosa they are entirely exposed and the eighth sternite is provided with scattered chitinous patches. In N. sinuata they are also exposed and they form together a crescent-shaped chitinous area on the eighth sternite. 11 In N. venosa the ninth sternite is triangularly produced forward to reach the posterior margin of the vaginal valves and to conceal the posterior half of the eighth sternite. The black spots are wanting. In N. sinuata it is rounded out in front to be slightly overlapped by the vaginal valves. The black spots are also wanting. 4. The Development Of The Genitalia. During the first eight instars, the sexes of the naiads can not be distinguished by external characters. Later on, the genital parts of the adult can be seen to develop gradually beneath the semi-transparent skin of the naiad. The Male. Beginning with the ninth instar, a median invagination takes place in the male between the ninth and the tenth sternites, and it continues to develop inward and forward to form the ejaculatory duct. In the fourteenth instar. the supra-anal lobe begins to develop from the posterior border of the tenth tergite, and the supra-anal process gradually recurves upwa...
Read online Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 Buy and read online Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 Download and read Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26 for pc, mac, kindle, readers Download to iPad/iPhone/iOS, B&N nook Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica Volume 20-26
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