File:PZSL1889Plate59.png

English: Transverse sections of squamate reptiles:

1-7: Advanced embryo of Darwin's Ringed Worm Lizard, sequence of sections from center of lung to cloaca
8: Adult male Common European Adder, section through kidney
9: Advanced embryo Grass Snake, section through kidney and genital gland
10: Adult female Grass Snake, section through kidney and oviduct

al = alimentary canal, ao = dorsal aorta, a.v = vitelline artery, bl = urinary bladder, c.a = corpus adiposum (fat body), ca.c = circumadiposal cavity, cr.c = circumrenal cavity, c.w = Wolffian body, g = genital gland, h = liver, m = median septum (mesentery and ligaments supporting alimentary canal), n = spinal cord, o = developing egg, od = oviduct, pp.c = pleuroperitoneal cavity, pul = lung, re = kidney, [spl = spleen,] v.a = anterior abdominal or allantoic vein, v.c.i. = vena cava inferior, v.d = vas deferens, [v.p = posterior abdominal vein^[check],] v.v = vitelline vein, [x = omental bursa^[check],] 2' = left pulmohepatic recess, α = pulmohepatic ligament.