BY J. J. TLETCUEK, IJ.A., B.Sc. 641 



an interesting series of virgin specimens, of which with the 

 exception of two, I have cut sections. These two groups will be 

 considered separately, the consideration of the first forming Part 

 I. of this paper. Having been unable to complete my account of 

 the second group in time though all the specimens have been 

 examined, Part II. with summary and conclusion is held over 

 until the next meeting. 



Part I. — On the organs of females which have certainly produced 

 young. 



The animals from which these organs were taken, had, as in 

 the majority of cases, young ones in the pouches^ or they had 

 large but empty pouches and frequently young ones running 

 with them. The specimens are referable to the following genera 

 and species : 



Brush "Wallaby {Ilalmaturus ruficolli-s) 



Wallaroo (^Ospli ranter rohmtus) 



Eed Kangaroo (^Ospliranter rufas) 



Dorsal-striped AVallaby {Ilahnatiirus dorsalu 



Bridled Kangaroo {Onycliocjalea frcenata ) 



Grey Kangaroo (Macropus major') 



Hahnaturus riificollis. — In my previous account of the organs 

 of this species I unintentionally overlooked Pagenstecher's 

 reference to them, though an extract which I myself made from 

 his memoir is given in the paper by Mr. Lister and myself (P. 

 Z. S., ISSl, p. 981). The omission is due to my having had no 

 copy of the passage with me, and to the want of opportunity for 

 again consulting the original paper out here. The passage is as 

 follows : " In the first place it may be stated with regard to the 

 generative organs, that Owen is perfectly right in saying that in 

 M. major no communication at all exists between the median 

 vaginal csecum and the portion designated by him as the vestibule, 

 whilst on the contrary H. rujicollis (Bennettii) in our collection 

 shews a complete open communication," JS^o further description 



