BY J. J. FLETCHER, M.A., B.Sc. 809 



qu 'un canal etroit chez le kanguroos — Tethys, je n'ai trouve 

 qii'un membrane tre-s mince qui le sepaiait cle la cavite corres- 

 pondante du vagin, (urogenital passage) un pen au-dessons de 

 1' orifice de l'uretre." 



These two instances seem to me to show pretty much the same 

 thing as my specimen. 



(<?.) These organs belonged to a small female with a rudimen- 

 tary pouch and teats. On slitting up the urogenital canal there 

 is no other aperture to be seen but that of the meatus urinarius. 

 I have not been able as yet to sectionize this specimen, but in 

 the mean time it would seem to be like the previous one. 



Hahnaturus rufieollis. — I have examined five specimens belong- 

 ing to this species. Of four which I got myself, each had a 

 young one in the pouch. The fifth had a large pouch but no 

 young one. All five shew the existence of the direct communi- 

 cation between the median vaginal canal and the urogenital 

 passage. 



The ridges in this species have the same relative arrangement 

 as in Osphranter robustus, but their height is not so great. In 

 one case the two longitudinal ridges were not quite £ in. apart. 

 There is slight variation in different specimens in the situation of 

 the apertures both of the urethra and of the direct communication, 

 since sometimes they are on the summit of the median ridge, at 

 other times slightly to one or other side of it. In one specimen 

 the median ridge was confluent with one of the lateral ridges and 

 the two apertures were situated at the base of the compound ridge. 



Petrogale penicillata. — I have examined the organs of eleven 

 animals belonging to this species. Of these each of eight had 

 a young one in the pouch, one had a large but empty pouch and 

 two were young specimens with rudimentary pouches. Nine of 

 these shew a direct communication between the median vaginal 

 canal and the urogenital sinus. The ridges in this species are 

 relatively as large and as well marked as in the previous cases. 



