ON MAMMALS FROM NEW GUINEA OBTAINED BY THE 

 DUTGH SGIENTIFIG EXPEDITIONS OF REGENT YEARS 



BY 



OLDFIELD THOMAS. 



Thanks to the kindness of Dr. K. W. DAMMERMAN, of the Buitenzorg Zoological Muséum, 

 I hâve been privileged to work out the fine séries of Papuan Mammals obtained on the various 

 expéditions to Dutch New Guinea carried out for the benefit of that Muséum, notably that 

 under Dr. VAN H.EURN in 1920 to the Mamberamo région of North New Guinea. To the 

 spécimens obtained by thèse expéditions Dr. DAMMERMAN has added a number of others 

 which hadbeen accumulated in the Buitenzorg Muséum, the whole séries therefore being of 

 very considérable extent and interest. In ail, of the Buitenzorg séries, I hâve had through 

 my hands 296 spécimens, belonging to 41 species, of which I hâve had occasion to describe 

 no less than 14 as nevv. 



Although no new generic types hâve this time corne to light, many of the nevv species 

 are of considérable interest, such as the fine Kangaroo belonging to the genus Dorcopsis, 

 which I hâve named after Dr. VAN HEURN, and the little Phalangers [Pseudochirus), one of 

 which, the smallest of ail, I hâve dedicated to Dr. DAMMERMAN. Preliminary notices of the 

 new forms were published in the Annals for March '), the présent paper containing fuller and 

 more complète accounts of them. 



In working out the collection, occasion has been found to study more closely the 

 rodents formerly referred to Uromys, a group I hâve now divided into three. The fine Bui- 

 tenzorg séries has been of material service in doing this work. 



Finally, when the paper on the Buitenzorg material was finished I was asked by Dr. 

 DE BEAUFORT of Amsterdam if I would incorporate in it notes on some mammals obtained 

 by Dr. G. VERSTEEG during the Dutch New Guinea Expédition of 19 12 — 13 to the country 

 south of the Nassau Range, under the leadership of Captain FRANSSEN HERDERSCHEE, and. 

 this additional material has resulted in the description of four further new species — notably 

 two fine members of the genus Pseudochirus. 



Thanks to the kindness and scientific spirit of Dr. DAMMERMAN, the whole of the 

 types of the new forms of the Buitenzorg collection hâve been presented to the British Muséum, 



11 Ann. Mag. N. H. (9) IX., p. 261. March 1922. 



