THE FEMALE REPRODUCTIVE ORGANS. 245 



presence of a number of the rudimentary canals which constitute the 

 lower atrophic segment of the Wolffian body produces the obscure 



C 



Diagrams illustrating development of sexual organs. In all figures IV t M, B , and G represent 

 respectively Wolffian duct, Miillerian duct, bladder, and gut. A , indifferent type containing funda- 

 mental parts: s, sexual gland; t,t',t", Wolffian tubules constituting anterior (pronephros), middle 

 (sexual), and posterior (rudimentary; groups; those of sexual division retain their communication 

 with Wolffian duct. B, male type : '1 , testicle; e, e' , tubes of globus major derived from middle 

 Wolffian tubules ; v, tube of epididymis, the persistent Wolffian duct ; s, seminal vesicle ; /, para- 

 didymis; h' ', unstalked hydatid ; u', uterus masculinus, the persistent parts of the Miillerian duct 

 (M) ; h, stalked hydatid; g, Cowper's glands; m, penis ; K, kidney. C, female type: O, ovary; 

 /', parovarium ; /', paroophoron ; IV, Gartner's duct when present ; f, fimbria ; o, oviduct ; u, 

 uterus; v, vagina; h, stalked hydatid; A", kidney. (Modified after Wiedersheim.) 



paroophoron, the homologue of the paradidymis. The greater 

 part of the Wolffian duct atrophies in the female ; when it persists 

 as a pervious canal it becomes the duct of Gartner. 



Male. 



Indifferent Type. 



Testicle. Sexual gland. 



Tubules composing globus Wolffian tubules. 



major. 



Paradidymis. 

 Tube of epididymis and vas Wolffian duct. 



deferens. 



Stalked hydatid. 



Sessile hydatid representing 



fimbria. 

 Sinus pocularis. 



Bladder. 



Urethra. 

 Prostate gland. 

 Cowper's glands. 

 Penis. 

 Prepuce. 

 Scrotum. 



Duct of pronephros. 

 Miillerian duct. 



Lower segment of allantois 



and part of cloaca. 

 Uro-g^nital sinus. 



Genital eminence. 

 Genitalfolds. 

 Genital ridges. 



Female. 



Ovary. 



Short tubules of parovarium. 



Paroophoron. 



Head-tube of parovarium. 

 Gartner's duct when persist- 

 ent. 



Stalked hydatid. 



Oviduct. 



Uterus. 

 Vagina. 

 Bladder. 



Vestibule and urethra. 

 Paraurethral tubes. 

 Bartholin's glands. 

 Clitoris. 

 Labia minora. 

 Labia majora. 



