ON SOME NEW PHALANGERS OF THE GENUS PSEUDOCHIRUS 

 BY OLDFIELD THOMAS 



By the kindness of the autliorities of the Museo Civico, Genoa 

 I have been permitted to examine some mammals obtained by 

 Dr. Loria in the district of the Yanapa river, British New Guinea. 

 Examples are present of the rare species Dendrolagus dorianus, 

 Dorcopsis macleayi and Phascologale wallacei , intergrading spe- 

 cimens of both dark and light forms of Phalanger orientalis, and 

 finally three skins of a new Pseudochirus allied to Ps. albertlsi. 

 In working out the last named , two other Pseudochiri in the 

 British Museum, received since the publication of the Catalogue 

 of Marsupials , prove to need description. 



The British Museum has been most generously presented with 

 a du})licate series of tliese interesting mammals. 



By Dr. Loria's desire , the new species discovered by him is 

 named in memory of his deceased sister. 



1. Pseudochirus corinnae, sp. n. 



General external appearance above strikingly like that of Ps. 

 alberlisi. Indeed the resemblance is so great that at first sight 

 the two animals appear to be identical, many and essential as 

 their detailed differences are. General colour of l)ack rather 

 lighter and more silvery, especially where it borders on each 

 side the dark dorsal line. Ears longer, closely hairy to their edges 

 outside, but entirely without the long black hairs with which 

 they are tufted in Ps. alberasi; lower part of their outer edge 

 with a yellowish spot. Undersurface of body dirty rufous or 

 fulvous grey, little defined ; without mesial white markings. 

 Hands^ feet and tail not or scarcely darkening terminally ; indeed 

 the digits are lighter than the metapodials , though there are 



