FlG. 29. A TAILED FROG, NEAR THE CLOSE OF THE METAMOR- 

 PHOSIS, DISSECTED FROM THE VENTRAL SURFACE TO SHOW THE KID- 

 NEYS AND REPRODUCTIVE ORGANS. X 4. (After Marshall.) 



A, dorsal aorta. F, fat body. G M, glomerulus. K A, archinephric or 

 segmental duct. KM, Wolffian body. K ' P, head-kidney, disappearing. K U, 

 ureter. O, mouth. OR, genital ridge. R V, tip of ventricle. TO, oesophagus, 

 cut short. 



80 



