52 MACROPUS. 



3. MACROPUS EU GENII, Desmarest, sp. (1817). 

 (Halmaturus derluanus, Gould.) 



Size small ; form light and graceful. Rhinarium ending 

 some distance from the mouth. Fur rather short in mainland, 

 longer in island, specimens. General color above grizzled gray 

 with rufous shoulders ; below white or grayish-white. Generally 

 an indistinct white cheek-stripe. Ears long in mainland, short in 

 island, specimens, dark gray. An ill-defined dark streak from the 

 occiput to the back. Shoulders, sides of neck, and arms rufous. 

 Hands, feet, and tail gray; nearly black at their extremities. 



Dimensions. Head and body from about twenty-four inches in 

 mainland to twenty -eight in island examples; tail about seventeen 

 inches in both forms. 



Habitat. Mainland of Western Australia; Islands off the coast 

 of West and South Australia. 



References. Thomas, B.M. Catal. p. 54, pis. vii. fig. 3 (upper 

 view of skull), x. fig. 10 (fourthpremolar),&nd xi. fig. 3 (rhinarium); 

 Gould, Mamm. Austr. ii. pis. xxix., xxx. 



4. MACROPUS PARMA, Waterhouse (1846). 

 White -throated Wallaby. 



Size small. Essential characters as in M. eugenii, but with 

 the back more rufous, not contrasting with the nape. White 

 cheek-stripe and brown nuchal stripe clearer. Front of throat 

 pure white, sharply contrasting with sides of neck. Belly grayish- 

 white. Ears short their backs rufous gray. 



Dimensions. Head and body about twenty-six inches ; tail 

 about seventeen inches. 

 Habitat. New South Wales. 



References. Thomas, B.M. Catal. p. 57, pis. ix. fig. 5 (upper 

 incisors) and x, fig. 11 (fourth premolar); Gould, Mam. Austr. ii. 

 p. xxviii. 



5. MACROPUS THETIDIS, Lesson (1827). 



Pademekm. 



Size sinall ; form light and agile. Rhinarium broad to the 

 lip, the latter little developed. Fur of medium length, thick and 

 soft, its direction on the neck variable, sometimes directed for- 

 wards. General color above grizzled gray, the neck rufous ; below 

 white. No nuchal streak. Ears long, their backs gray, edged 

 anteriorly with brown or black. Sometimes a faint light hip- 

 stripe. Arms and legs gray or rufous; hands and feet pale brown. 

 Basal fourth of tail gray; the remainder brown above, white 

 below. 



