8 ON SOME POINTS IN THE ANATOMY OF KANGAROOS, 



The sections in question number 30, 46, 17, 11, and 28 respectively, 

 as compared with 33 in specimen c. The sections of two of these 

 show the longitudinal septum very well. 



Osphvanter rufus. — Two specimens from animals of which the 

 dimensions are unknown to me, but judging from the size of the 

 organs they were both very large for unimpregnated females, 

 though this may in some measure be due to the fact that the 

 animals were shot just about the commencement of the breeding 

 season. In one case eight sections came between the ending of 

 the median vagina and the first appearance of the meatus 

 urinarius. The other specimen was carefully dissected, and 

 shows the median vaginal chamber extending very far back, and 

 ending blindly just in advance of the meatus urinarius. The 

 two chambers are thus separated merely by the thin intervening 

 portion of the ventral wall of the urogenital canal. 



Hahnatitrits dor salts. — Two specimens from animals of which I 

 have not the measurements. The larger of the two gives sections 

 of about the same size as the specimen of P. penicillata above 

 mentioned. The other is evidently from a smaller animal. The 

 sections which intervene between the ending of the median vaginal 

 chamber and the first appearance of the meatus urinarius in these 

 two cases are 13 and 28. 



Halmaturus ualabatus. One specimen from an animal 



measuring about 15 in. This example is similar to the first 

 of the two unimpregnated specimens of P. penicillata described 

 in my first paper. The cavity of the median part of the 

 vagina extends very far back, but comes to an end in the usual 

 way, while in sections which show the last part of its course there 

 is seen below and distinct from it, another aperture, and this is 

 found to be in communication with the urogenital canal and the 

 place of communication occupies the usual position of the aperture 

 of the direct communication as seen in animals which have produced 

 young The two passages overlap to a greater extent than in the 

 specimen of P. p. alluded to above, but in both cases if they had 

 been in the same straight line and in the same plane they would 



