File:1911 Britannica-Arachnida-scorpion.png
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摘要
| 描述 |
English: Diagram of the dorsal surface of a scorpion. oc, Lateral compound eyes. oc′, Central monomeniscous eyes. PA, Post-anal spine. I to VI, The six appendage-bearing somites of the prosoma. VII, The tergum of the first somite of the mesosoma—the genital somite—and is not a survival of the embryonic praegenital somite. The anus (not seen) is on the sternal surface. VIII to XIII, The six somites of the mesosoma, each with a movable pleural spine and a pair of dorsal entopophysis or muscle-attaching ingrowths. XIV to XVIII, The confluent or unexpressed six somites of the metasoma. (From Ray Lankester, Quart. Journ. Micr. Sci., vol. xxi., 1881.) |
| 日期 | |
| 來源 |
 Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 289 |
| 作者 | Encyclopædia Britannica, 1911 |
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|
This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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| 目前 | 2012年10月30日 (二) 01:09 | | 175 × 658（63 KB） | Clarice Reis | User created page with UploadWizard |
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