BY N. DE MIKLOUHO-MACLAY. 891 



such diversity in shape, that it cannot be explained, I believe, as a 

 sexual dilierence and therefore, I find myself obliged to distinguish 

 them as two diflerent species. 



The general shape of the body, principally the greyish brown 

 colour of the fur, greatly resembles Dorcopsis luctuosa. but the 

 hair on the neck directed backwards and the large incisors contra- 

 dict this supposition. 



Having been informed by Mr. Masters, the Curator of the 

 Macleay Museum, that a few skins of some New Guinea Kangaroo's, 

 purchased by Mr. Macleay from Mr. Goldie, were preserved in 

 spirits, I examined them at the first opportunity and had the good 

 chance of finding amongst them a skin, with the skull, of one of the 

 new species, which discovery put me in the position of examining 

 the dentition and of making the description of this species more 

 complete. 



The shape of incisors, the absence of canines, the smallness of 

 premolars and the direction (backwards) of the hair on the neck 

 are reasoos why I include the two new species in the Genus 

 ]Macropus. One of them I have called in honor of J. Beete Jukes, 

 the distinguished naturalist of the surveying voyage of H.M.S. 

 Fly in Torres Straits and New Guinea during the years 1842-46. 



1. Macropus Jukesii. n. sp. 



9. From the hills near Anuabada (Port Moresby) on the South 

 Coast of New Guinea. (Stuffed specimen in the Macleay Museum.) 

 Measuremeyits. 



From tip of nose to base of tail 635 mm. 24,8 in. 



Tail „ „ ,, , 370 — 14,6 



From tip of nose to occiput 124 — ^ 4,9 



Fore limb „ „ ,, about 170 — g 6,7 



Hind limb „ ,, ,, about 330 — -^ 13,0 



From head to the end of nail of 4th toe 142 — t, 5,6 



Length of the ear 44 — '^ 1,7 



Circumference of tail near base 124 — 4,9 



Colour of the fur. The head, back and external sides of the 

 limbs dark grey. The underside of the body from the chin to the 

 end of the tail of light grey colour. 



Mufiie bare. 



