ClipArt ETC
"Portion of a similar embryo at a later stage of growth. The praegenital somite, VII PrG, is still present, but has lost its rudimentary appendages; go, the genital operculum, left half; KM, the left pecten; abp4 to abp7, the rudimentary appendages of the lung-sacs." — The Encyclopedia Britannica, 1910

Embryo

"Portion of a similar embryo at a later stage of growth. The praegenital somite, VII PrG, is still present,…

"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." — The Encyclopedia Britannica, 1910

Scorpion

"Diagram of a lateral view of a longitudinal section of a scorpion. d, Chelicera. ch, Chela. cam, Camerostome.…