129 



THE EXTERNAL CHARACTERS OF POUCH EMBRYOS OF MARSUPIALS. 

 No. 5.— PHASCOLARCTUS CINEREUS. 



By Frederic Wood Jones, D.Sc, F.Z.S., 

 Professor of Anatomy in the University of /\delaide, 



[Read May 10, 1923.] 



Plate X. "' ' ^. [ 



Young stages of Phasoclarctus appear to be by no means common in col- 

 lections. So far, I have had the opportunity of examining only one example, 

 received in exchange by the kindness of Mr. Heber Longman, Director of the 

 Queensland Museum. 



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Fig. \. 



Phascolai'ctus cinereus. 

 Lateral view to show the general distribution of the hair tracts. 



This specimen, which measures 110 mm. in R.V. length, is in the best 

 possible stage for charting the hair tracts. Besides the peculiarities of the hair 

 tracts, there are so many features of interest in the external characters that the 



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