42 



BETTONGIA. 



Dimensions. Head and body about eighteen inches; tail about 

 fifteen inches. 



Habitat. Tasmania. 



References. Thomas, B.M. Catal. p. 106, pis. xiii. fig. 8 (fourth 

 jjremolar), xiv. figs. 1 (nasals), 2 (bulla); Gould, Mamrn. Austr. 

 ii. pi. Ixiii. 



3. BETTONGIA GAIMARDI, Desmarest, sp. (1822). 



G-aimard's Rat-Kangaroo. 



Fig. 3. 



Side view of skull, showing dentition. 



Fur woollier than in the other species. General colors as in 

 B. lesueuri, but the general tone rather more yellowish or fawn. 

 Hind feet white. Distal two-thirds of^the tail growing gradually 

 darker, and the hairs lengthening, till, on the terminal third, 

 there is a distinct black crest ; below'short-haired, white. 



Dimensions. Head and body about sixteen inches ; tail about 

 eleven inches. 



Habitat. New South Wales. 



References. Thomas, B.M. Catal. p. 108, pis. xiii. fig. 10 (fourth 

 premolar), xiv. figs. 3 (nasals), 4 (bulla); Gould, Mamm. Austr. 



4. BETTONGIA PENICILLATA, Gray (1837). 

 Brush-tailed Kangaroo-Rat. 



Fur and general colors not definitely different from the other 

 species. Hands and feet pale brown. Bristly hairs of feet not 

 hiding the claws. Tail long, with a prominent black crest along 

 the terminal one-third or two-thirds of its upper surface ; below 

 pale brown. 



Dimensions. Head and body about fourteen inches; tail about 

 twelve inches. 



