362 MR. OWEN ON THE GENERATION OF THE MARSUPIAL ANIMALS. 



duplicati, and Faginoe, Tvson ; Fagince, Geoffroy; Lateral uterine canals. 

 Home.) 



f. Urethro-sexual canal. (^ Canalis communis,' or common passage from the 



urethra and the two vagince, Tyson ; Canal urdtro-sexuel, Geoffroy ; Va- 

 gina, Home.) 



g. Urinary bladder. 

 h. Urethra. 



Fig". 7. The impregnated female organs of the Kangaroo {Macropus major, Shaw). 

 The gravid uterus c' is laid open, and also the chorion /, or membrana corticalis 

 of the foetus, showing the latter suspended from k, the umbilical chord. 

 In addition to the letters above explained, a' is the left ovary, with a large 

 corpus luteum, showing the orifice from which the ovulum escaped not 

 yet cicatrized. * The ovarian ligaments. Bristles are inserted into the 

 Fallopian tubes. The vaginal apparatus e, e' e', not iiaving been preserved 

 along with the impregnated uterus, is here added from another specimen, 

 in which the imperfect septum of the mesial cul de sac (e") did not extend 

 to the lower end of that cavity, as is usual in the Kangaroo. The cellular 

 membrane which connects the vaginal cul de sac with the urethro-sexual 

 passage has been removed. 



Plate VII. 



Vig. 1. The foetus and membranes of the Kangaroo removed from the uterus. 

 The foetus magnified two diameters. 



a, a. The exterior membrane or chorion laid open. 



b, b. The amnion. 



6, c. The umbilical vesicle. 



d, d. The omphalo-mesenteric veins. 



e. The omphalo-mesenteric arteries. 



/. The pedicle connecting the umbilical vesicle to the intestinum ileum. 



g. The stomach. 



h. The duodenum. 



i. (Fig. 2.) Convolutions of small intestine. 



k. The caecum. 



/. The large intestine. 



m. The liver. 



n. The kidneys. 

 o, o. The testes. 



p. The bifid rudiment of the penis at the verge of the anus. 



q. The diaphragm, 

 r, r. The lungs. 



s. The heart. 



