( 398 ) 



little tubules which I described and represented in the mesovariam 

 of a fullgrown Petrogale penicillata, remains out of discussion here^)'. 



Fig. 2. 



Relation of the J genital ducts 

 to the ovarium. 



ov. Ovarium. 



m. Mesovarium. 



0. a. Ostium abdominale lubae. 



m. g. MuUerian duct. 



w- g. Wolffian duct. 



tr. c. Transversal combination of both 

 the genital cords, 



s. u. g. Sinus uro-genitalis. 



Fig. 3. 



Relation of the genital ducts 



to the ovarium. 



ov. Ovarium, 



m. Mesovarium. 



0. a. Ostium abdominale tubae. 



t. Tuba Falloppie. 



u. Uterus. 



V. "Vagina. 



w.g. Remnant of the Wolftian ducts. 

 w'.g'. „ „ „ , „ 



g. s. genital cord. 



tr. c. Transversal combination of both 

 the genital cords, 



s. u. g. Sinus uro-genitalis. 



In the male sex the Wolffian duct shows in the development of 

 its cranial extremity, very much resemblance to that of the female 

 sex. (Fig. 4 and 5). 



During the reduction of the mesonephros the cranial extremity of 



1) V. D. Broek, Untersuchungen über die weiblichen Geschlechtsorgane der 

 Beuteltiere. Petrus Camper III. 



