File:1911 Britannica-Arachnida-Palamnaeus indus.png

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Description
English: Entosternum of scorpion (Palamnaeus indus, de Geer); dorsal surface.
asp, Paired anterior process of the sub-neural arch.
snp, Sub-neural arch.
ap, Anterior lateral process.
lmp, Lateral median process.
pp, Posterior process.
pf, Posterior flap or diaphragm of Newport.
m1 and m2, Perforations of the diaphragm for the passage of muscles.
DR, The paired dorsal ridges.
GC, Gastric canal or foramen.
AC, Arterial canal or foramen.
(After Ray Lankester, Quart. Journ. Micr. Sci., N. S. vol. xxiv, 1884.)
Date
Source Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 288
Author Encyclopædia Britannica, 1911

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Public domain 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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