XIII 



PIIYLUIVI ("HORDATA 



:wr 



the right of the partition arises the pulmonary artery ; from the 

 part to the left are given off the right and left aortic arches. 

 When the two auricles contract, the blood from 



the right 



a. CO 



in. CO 



Fig. 0(jS. — Xiacerta viridis. Dissection from the ventral aspect showing the alimentary, 

 circulatory, respiratory and urinogenital organs (nat. size). The liver (?r. ) is divided longi- 

 tudinally and its two halves displaced outwards ; the alimentarj' 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 adipose body. a. co. anterior cornu of hyo d ; az. azygos or 

 cardinal vein ; b. hy. body of hyoid ; c. caudal vein ; c ad. adijjose body ; c. m. cceliaco- 

 mesenteric artery ; no;, crecum ; cr. carotid artery ; ('. a'o. dorsal aorta ; ilu. diiodenum ; e. jv. 

 external jugvdar vein ; up. epididymis ; I'pa. epigastric vein ; f. a. femoral artery ; f. r. femoral 

 vein; g. b. gall-bladder; i. Jc. internal jugular vein; il. ileum; j to. inferior mesenteric 

 arteries; /-.kidney; /. reo. left aortic arch; L rtu. left auricle ; /(/.lungs; ??•. liver ; m. ro. 

 middle cornu of hyoid : p. a. pulmonary artery ; pr. pericardium ; p. ro. isosterior cornu of 

 hyoid ; 2m. pancreas ; })/. pelvic vein ; y//. c postcaval vein ; pt. r, poi tal vein ; p. >: pulmonary 

 vein ; r. rectum ; r. an. right auricle ; r. h. a. right hepatic artery ; sc. sciatic veil. ; ■■^rl. a. 

 subclavian artery; sc'. r. subclavian vein; «/)i. spleen ; st. stomach; .«. r. sinus venosi s ; 

 th. thyroid gland ; tr. trachea ; U. testis ; v. ventricle. (From Parker's Zoof<»i\;i.) 



VOL. II X 



