1. MACBOPUS. 41 



Size rather small ; form very slender and graceful. Nose partly 

 hairy between the nostrils (PI. V. fig. 6). Fur thick and soft. 

 General colour dark bluish grey. Underfur pale rufous, showing 

 through the longer fur, especially on the sides. Face-markings 

 clear and well-defined, arranged as in M. parryi, but the pale 

 cheek-stripe yeUow instead of white, and passing backwards much 

 further, being continuous with a prominent pale blotch at the base 

 of the outer margin of the ear. Back of ears and crown of head 

 black, the black passing backwards as a dark nuchal stripe. Inside 

 of ears pale yellow except at the tip, where there is a prominent 

 black border. A very inconspicuous pale hip-stripe . present, 

 separated from the pale flanks by a triangular portion of dark grey 

 like that on the back. BeUy pale grey, with a tinge of yellowish 

 or rufous. Arms and outsides of legs grey ; hands to metacarpus, 

 front of legs and feet to ends of metatarsus bright yellow. Fingers 

 and toes sharply defined pure black. Tail grey like the body for 

 its proximal quarter and all along its sides, but for its distal three- 

 quarters there is a well-defined crest of long stiff black hairs on 

 both the upper and under sides ; in some specimens the extreme tip 

 is white. 



Skull. Small and lightly built. Premaxillse upright. Nasals 

 long and narrow, their central breadth going nearly five times into 

 their length, very slightly expanded behind. Interorbital region 

 broad and flat, the supraorbital edges parallel without marked inter- 

 temporal constriction. Palate very complete for a Wallaby, the 

 largest vacuities not larger than p.' or p.* 



Teeth. Incisors small and slender ; i.' very short, not longer than 

 p.* P.' oval, about 5 milhra. long. P.'' short and broad, with a 

 well-developed postero-internal talon. 



Dimensions. 



2 



a (stuffed). 



Adult. 



millim. 



Head and body 780 



Tail" 720 



Hind foot 195 



Ear 65 



SkuU, see p. 45. 



Edb. "Western Australia (southern districts). 



Type not traceable. 



This beautiful spedies of Wallaby, distinguished by its peculiarly 

 double-crested tail and its weU-deflned markings, is the only 

 representative of the present group in Western Australia. 



Ad. sk. I p Swan R., W. A. {J. Gilbert). _ jGould OoU. (Type 



"■ j Skull ) * ■ oi H. manicatus, Gould.) 



I "" 



, Imm. St. I Toodyay, W. A. (7. Gilbert). Gould GoU, 



*■ ■! Skull, 



