204 



REPTILIA. 



kidney (primordial kidney and Wolffian duct), which in the Amphibia 

 still functions as a urinary organ, is here transformed into the 

 efferent apparatus of the testis (epididyrnis and vas deferens), and 

 in the female sex vanishes or rarely persists as a rudiment (Rosen- 

 mutter's organ, canal of Gartner), while in the female the Miillerian 



H 



Fi&. 634. Urogenital apparatus of Lacerta agilis (after C. Heider). <', of the male. N, 

 kidney; H, testis; Nk, epididymis ; TV, vas deferens; P, remains of the primordial 

 kidney (Wolffian body) ; T, remains of the Miillerian duct ; Pe, penis ; SP, pores of 

 femoral glands ; SD, femoral glands. I, Of the female, m, urinary bladder ; Md, 

 rectum (cut) ; Cl, cloaca OK, ovary ; T, Miillerian dnct developed into oviduct. 



duct becomes the oviduct. The oviducts as well as the vasa deferentia 

 open separately into the cloaca. The oviducts begin with a wide 

 peritoneal ostium, have a sinuous course, and secrete the calcareous 

 and usually membranous egg shells. The eggs in many cases remain 

 a long time in the terminal part of the oviduct (which may then 



