166 Wallabies usually referred to Macropus agilis. 



very prominent, especially the pure white cheek-stripe and 

 the hip-stripe. Chest pure white, helly yellowish. 



Hab. Northern Queensland. 



In the distinctness of the markings and the speckling this 

 form somewhat approaches the New Guinea form, from 

 which it is at once distinguishable by the light colour of the 

 body. The British Museum possesses a large series of 

 specimens from Inkerman, North Queensland, referred to by 

 Thomas and Dollman (P. Z. S. 1908, p. 793) as M. agilis. 



4. Macropus ayilis aurescens, subsp. n. 



Characterized by the pale reddish sandy upper side, and 

 the almost entire absence of dark speckling in the adult (not 

 in the young). Nape of neck not lighter than back; sides 

 of body slightly paler. Limbs yellowish. Markings of face 

 not very prominent ; hip-stripe rather distinct, yellowish 

 white. Hairs of under surface white with narrow yellowish 

 sandy bases. 



Hab. N.W. Australia. (Specimens from Fitzroy River 

 and Grant Range examined.) 



Type. B.Af. 0.6, 1. 5. Old J. J. T. Tunney coll. Fitzroy 

 River, W. Kimberley. 



Dimensions of type (measured in the skin) : — 

 Head and body 1050 mm.; tail 710; hind foot 240; 

 ear 69. 



Skull: basal length 141; greatest breadth 78; palatal 

 length 96 ; facial index 268 ; palatal foramina 6*2 ; length 

 of the upper tooth-row from front of " secator " to back of 

 last molar 40 ; length of " secator " 9. 



This new form is most nearly allied to M. ogilis, Gould, 

 but differs in the brighter colouring of the upper side and 

 the almost entire absence of dark hairs. 



The young of all these forms differ from the adult in 

 being darker, rather more reddish sandy in colour, more 

 distinctly suffused wilh black, having longer fur and less 

 prominent markings. The difference in size between the 

 adult male and female of these wallabies is noteworthy, the 

 old male being rather larger than the females of the different 

 wallaroos (M. robustus). Certainly it is the largest of all the 

 wallabies ; the female, on the contrary, is considerably 

 smaller. 



I am unable to find any skull-character separating the 

 different subspecies. There is a certain amount of individual 

 variation in the skulls, but no subspecific features are 

 developed. 



