BY J. J. FLETCHEB, M.A., B.Sc. 805 



investigating literature at the British Museum Library, and 

 finding our results to be so interesting we determined to publish 

 them, together with any others that might come to hand. A draft 

 of a joint paper embodying these and some other observations on 

 specimens which Mr. J. "W. Clarke, Superintendent of the 

 Cambridge Museum kindly allowed us to make, and on the organs 

 of a specimen of Drendrolagus sp. which died in the Zoological 

 Gardens, was written, and on my leaving England in November 

 last was left with Mr. Lister. Owing to pressure of work that 

 paper was still unpublished at the date of my friend's last letter, 

 and as I have not a copy of it with me I cannot give further 

 details concerning it. Mr. Lister however tells me that he has 

 had the opportunity of examining specimens of "Peirogale sp. in 

 various stages with quite the macropine arrangement, i.e. closed 

 before, and open after, having had young. 



III. Further Observations. 



The following account is founded on the examination of the 

 organs of seventeen kangaroos shot by myself or by friends shoot- 

 ing in company with me, and of three kindly given me by my 

 friend Mr. Morley. Acting on a suggestion made to Mr. Lister 

 and myself, by our distinguished master Mr. F. M. Balfour, 

 F.E.S., of Trinity College Cambridge, I have had recourse to 

 section-cutting in some cases, with the most satisfactory results. 



The animals from which the above mentioned organs came, 

 are referable to three genera and as many species, viz. Osphranter 

 robustus, Halmaturus mficollis, and Petrogale penicillata. I am un- 

 aware of any published account of the female organs in any one 

 of these three species, except in so far as the descriptions of H. 

 Bennettii already given may apply to H. rufieollis of which the 

 Tasmanian species is thought by Waterhouse to be merely a local 

 variety. When Mr. Lister and I were looking at the specimens 

 in the Museum of the Eoyal College of Surgeons, we noticed one 

 which evidently shewed the direct communication, but on referr- 



