URINOGENITAL ORGANS 



369 



Only slight remnants of the mesonephros and Wolffian duct persist 

 in female Reptiles, and these undergo fatty degeneration. They are asym- 

 metrical, and are arranged in a single row 011 either side, between the oviduct 



Ot- 



Od 1 



FIG. 294. FEMALE URINOGENITAL APPARATUS OF Lacerta muralis. 



N, kidneys ; C/r 1 , apertures of the ureters into the cloaca (Cl) ; B, urinary bladder ; 

 B 1 , neck of the latter (cut open) ; R, rectum ; A 1 , opening of rectum into the 

 cloaca ; Or, ovaries ; f, remains of mesonephros ; Od, oviducts, which open 

 into the cloaca at Od 1 ; Ot, abdominal openings of oviducts. 



and vertebral column. The remains of the Wolffian duct are more 

 marked in female Snakes, Chelonians, and in Geckos than in the majority of 

 Lizards. 



B B 



