ON MAMMALS FROM NEW GUINEA. 739 



is by no means wholly black, that the coloration of the type is quite normal, and that P. 

 lorentsi should be accepted as a black-backed species with grizzled greyish sides and belly. 

 There are four mammae in the female, as in P. dorsalis and its allies. 



As a resuit, it seems that the fine rufous Goliath Mountain form, which in 1912 ') I 

 described as showing the normal coloration of P. lorentsi, is really quite a différent species, 

 recognisable by its white-speckled red coloration. Later on 2 ), supposing that to be the true 

 lorentsi, I gave, in 1921, to a subspecies of it, from the Weyland Mountains, the name of 

 P. lorentsi venusta, the latter name being therefore now applicable, as a species-name, to the 

 red animal of both Goliath and Weyland Mountains. 



And of the two forms of P. venusta, that from Mount Goliath now requires a new 

 subspecific name, and may be called P. venusta rubrata. The différences from the true venusta 

 are explained in the description of the latter. 



The following recapitulation of the characters and names will perhaps make clearer 

 this somewhat complicated matter 



Size comparatively large. Mammae 4. Tail-tip white. 



a. Back black. sides and belly grizzled with grey. Noord River. 1. P. lorentsi, Jent. 



b. Whole of upper surface rich reddish, grizzled with white. 2. P. venusta, Thos. 



a 2 . Undersurface dull brownish rufous, inner sides of limbs greyish. Weyland 

 Mountains '. 2a. P. venusta venusta. 



b' 1 . Undersurface richer rufous, the inner sides of fore and hind limbs rich ochra- 

 ceous cinnamon. Mt. Goliath .... 2b. P. venusta rubrata, subsp. n. 



The type of P. venusta rubrata would be : Old Maie. B. M. N°. II. il. 29. 10. Original 

 number S. Collected in January 191 1 by A. S. Meek. Three spécimens examined.] 



41. j Svùnthopsis rufigenis, Thos. 



Q and 2 young in al. XX. Aru Islands. 



A fairly large species with red cheeks, as in the much larger 5. Virginia. 



Size 'decidedly less than in virginiœ, about equalling the larger forms amongst the 

 other species. Build rather stout and thickset. General colour dark lined greyish-brown ; under- 

 surface grey with the hairs slaty at base, greyish-white terminally. Muzzle with a dark médian 

 line, gradually disappearing on the crown. Cheeks from below eyes to base of ears bright 

 rufous. Ears themselves thinly haired, the lower part of the proectote and mesentote rufous. 

 A large metatragus présent, 3.0 mm. X 3-0. Upper surface of hands and feet buffy brown. 

 Soles hairy under the calcaneum, the remainder naked, very slightly granulated, the four pads 

 arranged as in S. murina, the distal ones very. finely and indistinctly striated. Tail rather 

 longer than head and body, slender, not incrassated, evenly short-haired, brown above and 

 below. Mammae 6. 



Skull of normal shape, the nasals not expanded posteriorly. Premolars above evenly 

 increasing in size backwards ; below p 4 is not larger than p 3 . 



Dimensions of the type, measured on the spirit spécimen : 



1) Add. Mag. N. H. (8) IX. p. 91. 1912. 



2) Op. cit. (9) VIII, p. 358, 1921. 



