THE LIZARD. i6i 



its two halves displaced outwards : the alimentary canal is drawn out 

 to the animal's left ; the cloaca, with the urinary bladder and posterior 

 ends of the vasa deferentia, is removed, as also is the right corpus 

 adiposum. 



a.co, anterior cornu of hyoid : az, azygos, or cardinal vein : b.hy, 

 body of hyoid : c, caudal vein; cad, corpus adiposum : cm, cceliaco- 

 mesenteric artery, the branches of which have no reference letters, to 

 avoid confusing the figure, (see § 159) : ca, csecum : cr, carotid artery : 

 d.ao, dorsal aorta : dii, duodenum : e.ju, external jugular vein ; ep, 

 epididymis : eff^, epigastric vein :f.a, femoral artery :f.v, femoral vein ; 

 g.b, gall-bladder: i.ju, internal jugular vein: il, ileum: i.m, inferior 

 mesenteric arteries : k, kidney : l.ao, left aortic arch : l.au, left auricle : 

 ^S' lungs : If, liver : m.co, middle cornu of hyoid : p.a, pulmonary 

 artery : pc, pericardium : p.co, posterior cornu of hyoid : pn, pancreas : 

 pi, pelvic vein : pt.c, postcaval vein : pt.v, portal vein : p.v, pulmonary 

 vein: r, rectum : r.au, right auricle ; r.h.a, right hepatic artery: sc, 

 sciatic vein : i<r/. a, subclavian artery : scl.v, subclavian vein ; spl, spleen : 

 St, stomach : s.v, sinus venosus : t!i, thyroid gland : tr, trachea : Is, 

 testis : v, ventricle. 



135. The gall-bladder {g.b), an ovoidal sac, situated at 

 the lower margin of the right lobe of the liver, and having, 

 in the fresh state, a green colour, due to the contained bile. 



136. The intestine {du, il), forming several coils in the 

 posterior third of the ccelome. 



137. The corpora adiposa {cad), paired masses of fat, 

 of somewhat semi-lunar shape, lying immediately in front 

 of the anterior boundary of the pelvis, between the peritoneal 

 and muscular layers of the body-wall. 



138. The epigastric or anterior abdominal vein 

 {epg), a median ventral vessel, running along the inner face 

 of the body wall, between the peritoneum and the rectus 

 abdominis : posteriorly it is formed by the union of two 

 pelvic veins (/>/), which are attached to the inner borders 

 of the corpora adiposa and receive veins from them : 

 anteriorly the epigastric vein enters the left lobe of the liver 

 on its posterior face : two other abdominal veins bring blood 

 from the ventral body wall, and enter the liver on its ventral 

 face at about the junction of its right and left lobes. 



