248 Mr. O. Thomas on 



As usual, there is a great prevalence of wliite-lieaded and 

 white-tailed individuals in the present series, about one-third 

 of the specimens being so affected. 



CoUett's subspecies P, volans minor^ of which the type- 

 locality may be taken as Herbert Vale, Nortli Queensland, is 

 of about the same colour as incanus, but is materially smaller. 



Among the specimens assigned by Collett* to this animal, 

 however, are two from Coomooboolaroo and Calliungal re- 

 spectively, both in the Rockhampton region, which are larger 

 than minor, while still decidedly smaller than incanus. 

 These appear to me to represent a Middle Queensland sub- 

 species, which may be called 



Petauroides volans armillatus^ subsp. n. 



Size, as gauged by skull, distinctly larger than in minor, 

 though falling much short of that in volans and incanus. 



General colour of upper surface as in minor, but, as in 

 mca7ius, the backs of the ears, the forearms, and the lower 

 legs are black, almost as black as the hands, while in true 

 minor, as shown by Mr. Sherrin's series, these are merely 

 brown, little darker than the dorsal colour, and distinctly 

 lighter than the black hands. Tail, in the single specimen, 

 grey at base, like the back, not whitish as in minor^ while 

 the terminal part is less markedly black — but the caudal 

 colour is rather variable throughout the genus. 



Skull like that of minor, but larger. In the type the 

 nasals are continued further back in the middle line than 

 usual, but there is variation in minor in this respect. 



Dimensions of the type : — 



Head and body (on skin, apparently stretched) 370 mm. ; 

 tail 460 ; hind foot 48; ear 36. 



Skull: greatest length 56; condylc-basal length 54; 

 zygomatic breadth 36*5; nasals 16'6x9; intertemporal 

 breadth ^'Q ; ms^~^ 10*5. 



I'lah. Rockhampton region of southern Middle Queensland. 

 Type from Coomooboolaroo, 80 miles S.W. of Rockhampton. 

 Another specimen of what is evitlently the same form recorded 

 by Collett from Calliungal, 80 miles W. of Rockhampton. 



^ Type, Adult male. B.M. no. 87. 5. 12.2. Collected 

 Jan. 1884 by Dr. Carl Lumholtz, and received in exchange 

 from the Christiania Museum. 



"Dr. Ramsay's P. cintreus'^ incidentally mentioned by 

 Ogilby t as probably the same as minor, seems never to have 

 been described. 



* Zool. Jahrb. ii. p. 926 (1887). 

 t Cat. Austr. Mamm. p. 32 (1892). 



