2. PBTEOOALB. 65 



p. 11 (1871) ; Briihm, Thierl. ii. p. 594 (fig. of animal) (1880) ; 



List. 8f Fletcher, P. Z. S. 1881, p. 984 (anat.) ; Jent. Cat. Ost. 



Leyd. Mus. p. 323 (1887) ; PouUon, P. Z. S. 1883, p. 609 (anat. of 



tongue). 

 " Phalangista xantlinpygus," Gieh. Bronn's Kl. u. Ordn. vi. Abth. v. 



pi. XX. figs. 4^7 (skull) (1874). 

 Macropus xanthopus. Flow. Sr Gars. Cat. Ost. Coll. Surg. ii. p. 715 



(1884). 



Ybllow-eooted Kock-Wallabx. 



Size large. Fur long, soft and silky. Underfur thick and close, 

 dark grey. General colour of back grey ; head and extremities 

 richly ornamented. Face and crown grey, with a tinge of yellowish ; 

 a well-defined white cheek-stripe running from the mouth below 

 the eye nearly to. the ear ; a rich orange spot above each eye. 

 Ears long, their backs uniform dark yellow, and their inner sides 

 edged with white, except, at the tips, which are yellow, like the 

 outer. Back grey, a well-defined black streak running from 

 between the ears to the middle of the back. A triangular brown 

 blotch behind the elbow, followed by a pure white lateral streak, 

 which runs down the body to the hip. Top of knee with another 

 brown mark, outside which there is a prominent white patch. Chin, 

 chest, and belly pure white. Arms and hands, legs and feet uniform 

 rich yellow, the tips of the fingers and toes brown. Tail annulated 

 above with alternate bands of dark brown and pale yellow, the 

 brown bands gradually becoming united on the upperside, and 

 forming a well-marked blackish crest ; the bands visible on the 

 sides nearly to the tip ; underside yellowish or brownish white all 

 along ; extreme tip sometimes yellow. 



STcull (PI. XII. fig. 1) large and strong, especially the facial 

 portion. Muzzle broad and conical, the sides inflated, especially 

 just above p.* Premaxillse fairly upright. Nasals long, expanded 

 behind, their greatest width about twice their least, and going 

 about three times into their length ; the shape of their posterior 

 edge variable. Interorbital and posterior nasal region swollen, the 

 swelling passing away opposite the intertemporal constriction. 

 Supraorbital edges rounded in front, sharp and overhanging behind, 

 converging backwards. BuUie transparent, slightly swollen. 



Teeth largest and heaviest in the genus. 



Dimensions. 



6- , ?■ 



a (skin). c (stuffed), 

 millim. luillim. 



Head and body (c.) 800 680 



TaU 600 600 



Hind foot 170 160 



Ear 74 70 



Skull, see p. 72. 



Hah. South Atistralia. 

 Co-types in collection. 



