XTII 



PHYLUM CHORDATA 



585 



the narrow anterior parts or Fallopian tubes. In all Mammals 

 there is, in the vestibide or uriiiogcnilal 'pdiiscujc through which 



Off 



V, 



\) 



■^y///' \ 



V^«*55'^- 



Fio. 1212.— Various forms of uteri in Eutheria. A, B, C, U, diagrams illustrating- the different 

 degrees of coalescence of the oviducts. A, two distinct uteri. B, bicornuate uterus. C 

 uterus with a median partition. 1), complete coalescence. E, female leproductive organs 

 of one of the Mustdiiia with embryos (**) in the uterus. ¥, female reproductive organs of the 

 Hedgehog. i>, urinary bladder; Ce. cervix uteri (neck of uterus) ; N, Nn, kidneys and 

 adi-enal bodies ; OiL Fallopian tube ; Ot. ostium tuba3 (abdominal opening of oviduct) ; Si'g. 

 nrinogenital sinus ; <■. rectum ; Ur. ureters ; Ut. uterus ; I'ff. vagina ; tt, accessory glands. 

 (From Wiedersheim's Comparatire Anatomi/.) 



the vagina communicates with the exterior by the aperture of the 

 vulva, ix small body— the clitoris — the homologuc of the penis and 

 sometimes j)erforaLed by the urethral canal. 



