74 



OVIDUCTS OF MARSUPIALS 



W W irt ^^ 



<f CI 



Fig. -IS.— Female iiriuo - genital 

 apparatus of various Marsu- 

 pials. A, Didclphys dorsigera 

 (young) ; B, Trichosurus ; 

 C, Phascolomys wombat. B, 

 Urinary bladder ; CI, 

 "cloaca"; Fim, fimbriae; 

 //, clitoris ; N, kidney ; Od, 

 Fallopian tube ; Ot, aper- 

 ture of Fallopian tube; Ov, 

 ovary ; r, rectum ; »S^, sep- 

 tum dividing vagina ; Sxig, 

 urino - genital sinus ; Ur, 

 ureter ; Ut, uterus ; Ut' , 

 opening of the uterus into 

 the median vagina ( VfiB) ; 

 Vg, lateral vagina ; Vg' , its 

 opening into the urino-genital 

 sinus ; t (in B), point of 

 approximation of uteri ; t (in 

 C) and*, rectal gland.s. (From 

 Wiedersheini's Comparatii-e 

 Anatomy.) 



extruded ova to follow. This series of steps in the perfecting 

 of the mode of safe extrusion of the ova is highly interesting. 



