XI 



FGETUS AND PLACENTA 



541 



funnel with thin walls and folded margins, which is 

 applied to the outer surface of the corresponding ovary. 

 On the ventral wall of the hinder or proximal end of the 

 urinogenital canal is a small, hard, rod-like body, the 

 clitoris (Fig. 135, d), corresponding to the penis of the 

 male, and strengthened by two small corpora cavernosa 

 (Fig. 144, B, c. c) attached at their proximal ends to the 

 ischia. 



fit *** 



1Mb' 



rut 



FIG. 145. The anterior end of the vagina, with the right uterus, Fallopian tube, 

 and ovary of the Rabbit ( x about 2). Part of the ventral wall of the vagina is 

 removed, and the proximal end of the left uterus is shown in longitudinal section. 

 fl. t. uterine tube ; fl. t' . its coelomic aperture ; /. ut. left uterus ; /. ut'. aperture 

 of same (os uteri) into vagina ; ov. right ovary ; r. ut. right uterus ; r. ut'. 

 aperture of right uterus into vagina ; $. vaginal septum ; va. vagina. (From 

 Parker's Zootomy.) 



The rabbit is viviparous. The minute ova are dis- 

 charged into the uterine tubes, where they become 

 fertilised, and then pass into the uterus, in which each 

 develops into a fcetus, as the intra-uterine embryo is 

 termed, and is nourished by means of an organ known 

 as the placenta, which will be described in Chapter XIII. 

 The young animal escapes from the uterus in a condition 

 in which all the parts have become fully formed, except 



