File:1911 Britannica-Arachnida-scorpion2.png

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1911_Britannica-Arachnida-scorpion2.png (390 × 436 pixels, file size: 101 KB, MIME type: image/png)

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English: A, Diagram of a retinula of the central eye of a scorpion consisting of five retina-cells (ret), with adherent branched pigment cells (pig).

B, Rhabdom of the same, consisting of five confluent rhabdomeres.
C, Transverse section of the rhabdom of a retinula of the scorpion’s central eye, showing its five constituent rhabdomeres as rays of a star.

D, Transverse section of a retinula of the lateral eye of Limulus polyphemus, showing ten retinula cells (ret), each bearing a rhabdomere (rhab).
(After Ray Lankester.)
Date
Source Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 295
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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