THE LIZARD. 161 



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 aeferentia, is removed, as also is the right corpus 

 adiposum. 



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

 body of hyoid : c, caudal vein : c.ad, corpus adiposum : c.m, cceliaco- 

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

 avoid confusing the figure, (see 159) : ccz, caecum : <;r, carodd artery : 

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

 epididymis : epg, epigastric vein :f.a, femoral artery :/.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 : 

 lg, lungs : Ir, liver : m.co, middle cornu of hyoid : p.a, pulmonary 

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

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

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

 sciatic vein : scl.a, suhclavian artery : scl.v, subclavian vein : spl, spleen : 

 st t stomach : s.v, sinus venosus : ///, thyroid gland : tr, trachea ; is t 

 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, //), forming several coils in the 

 posterior third of the ccelome. 



137. The corpora adiposa (c.ad), 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. 



