1. MACH0PU8. 37 



Dimensicms. 



6. ?. 



a (stuffed), b (stuffed). 



millim. millim. 



Head and body 810 840 



Tail 730 710 



Hind foot 212 216 



Ear 65 71 - 



SkuU, see p. 45. 



Hah. South-eastern South Australia. 



Co-types in coUeotion. 



The skull and dentition of this species show that, while by its 

 external characters it closely resembles M. rufioollis and other 

 members of the present group, yet it is probably more nearly related 

 genetically to the next group of Wallabies. This is specially shown 

 by the small size of the brain-case, the shape and feebleness of 

 the incisors, and the character of the nasal bones. In all groups 

 an increase of size is marked by a corresponding increase in the 

 proportionate size of the face, so that, judging from its very high 

 facial index and by the other characters just mentioned, we ought 

 to regard M, greyi as a comparatively recently enlarged member 

 of the group of small Wallabies. 



, I Ad. sks. I , o South Australia. Sir George Grey [P. & C.]. 

 "'"■] Skulls. f°+- (Co-<ype« of species.) 



10. Macropus dorsalis. 



Halmaturus dorsalis, Gray, Charlesw. Mag. N. H. i. p. 683 (1837) ; 



id. Grey's Austr., App. ii. p. 408 (1841) ; Gould, Mon. Macrop. 



pi. viii. (animal) (1841) ; Gray, List Mamm. B. M. p. 90 (1843) ; 



Wagn. Schr. Sdug. Supp. iii. p. 127 (1843), v. p. 323 (1855) ; 



Schinz, Syn. Mamm. i. p. 556 (1844) ; I)esm. Diet. Univ. d'H. N. 



vii. p. 170, Atl. pi. xviii. (animal) (1849) ; Gould, Mamm. Austr. 



ii. pis. xivi. & xxvii. (animal) (1867) ; Gerrard, Cat. Bones Mamm. 



B. M. p. 127 (1862) ; Gray, P. Z. 8. 1866, p. 221 ; Krefft, Mamm. 



Austr. pi. xi. (animal) (1871) ; Fletcher, P. lAnn. Soo. N. 8. W. 



vii. p. 641 (1882), viii. p. 8 (1883) (anat.) ; Jmt. Cat. Ost. Leyd. 



Mm. p. 320 (1887) ; CoU. Zool. Jahrh. ii. p. 885 (1887). 

 Macropus (Halmaturus) dorsalis, Waterh. N. H. Mamm. i. p. 152, 



pi. V. fig. 14 (incisors) '(1846). 

 Macropus dorsalis, Waterh. Cat. Mamm. Mus. Z..S. p. 67 (1838) ; 



id. Jard. Nat. Libr., Mamm. xi. p. 230 (1841) ; Gfiebel, Odontogr. 



p. 43, pi. xix. fig. 12 B (incisors) (1855) ; id. Sdug. p. 681 (1859) ; 



td. Bronn's Kl. u. Ordn. vi. Abth. v. pi. Ixvii. fig. 21 (14) (incisors) 



(1876). 



Black-sieiped Wallaby. 



Size small ; form light and delicate. Rhinarium (PL V. fig. 5) 

 whoUy naked. General colour grey, becoming rich rufous on the 

 forequarters ; a distinct narrow black line from occiput to centre 



