syrf-cr 

 coet.mes 



ret 



abd.ts 



FlG. 10. Organs of a female frog. The alimentary canal has been cut off 

 at the gullet (gul.) and rectum (ret.), and most of the liver has been re- 

 moved. The right ovary and fat body are also removed and the ventricle 

 of the heart has been turned forwards, abd. v, abdominal vein cut and 

 turned back; coel. mes, cceliaco-mesenteric artery; cp. ad, corpus adi- 

 posum, or fat body; d. ao, dorsal aorta; gid, gullet; /. an, left auricle; 

 /. Ing, left lung; /. ovd, left oviduct; /. ovd' , its opening into the body 

 cavity; /. ovd" , its posterior dilatation or uterus; /. ovy, left ovary; Ir, 

 portion of liver; pt. cv, postcaval vein; r. an, right auricle; ret, rectum; 

 r. kd, right kidney; r. Ing, right lung; rn.pt, renal portal vein; r. ovd, 

 right oviduct; r. ovd' , its opening into the body cavity; r. ovd", its 

 posterior dilatation; syst. tr, systemic trunks; u. bl, urinary bladder; 

 ur, ureter ; v, ventricle. (After Parker and Parker.) 



75 



