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. A'/4, archinephric or 

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

 ureter. (?, mouth. O R^ genital ridge, ^i V^ tip of ventricle. T O, oesophagus, 

 cut short. 



80 



