File:1911 Britannica-Arachnida-Beck.png

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描述
English: After Beck, Trans. Zool. Soc. Vol. xi., 1883.
Diagram of a lateral view of a longitudinal section of a scorpion.

d, Chelicera.
ch, Chela.
cam, Camerostome.
m, Mouth.
ent, Entosternum.
p, Pecten.
stig1, First pulmonary aperture.
stig4, Fourth pulmonary aperture.
dam, Muscle from carapace to a praeoral entosclerite.
ad, Muscle from carapace to entosternum.
md, Muscle from tergite of genital somite to entosternum .
dv1 to dv6, Dorso-ventral muscles.

pv1 to pv7, The seven veno-pericardiac muscles of the right side.
日期
来源 Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 297
作者 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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