DUTCH BORNEO-EXPEDITION. 147 



specimens, representing 165 species, only 26 species which 

 were not stated by myself from the western side of the 

 watershed, and none were obtained which most likely would 

 not occur in the Kapoeas-basin as well. 



With such a great number of species, this collection is 

 quite sufficient to state that east from the watershed the 

 ornis does not show any essential difference from that of 

 the Kapoeas-region. It may now, as I already suggested 

 in my introduction to the enumeration of the mammals, 

 be considered as a matter of fact that the homogenity of 

 the ornis of Borneo is extremely great throughout the vast 

 island, especially as far as the lowland up to an altitude 

 of 1000 meter is concerned. 



The region of the Upper Kapoeas having previously 

 been entirely unexplored; I expected to obtain a number 

 of new species, especially in the mountain-forests, but 

 although I worked very hard in collecting as many 

 interesting species as possible, paying special attention to 

 the smaller and more unobvious forms, there is not a 

 single really new form among the 269 species collected, 

 and only two species {Harpactes orrhopliaeus and Cyano- 

 derma poliogaster)^ already known from other islands or 

 from the Continent, were obtained which had not been 

 recorded before from Borneo. 



These facts are pleading very strongly for the perse- 

 verance and the great success with which the Kina Balu 

 and the mountainous interior of Sarawak have been explo- 

 red by energetic naturalists as Whitehead, Everett and 

 Hose, who added so many new species, especially mountain 

 forms, that we were not able to enrich this great number 

 with a single new species. 



The specimens treated of in the present paper, have been 

 collected in the following localities and on the following 

 dates '). 



1) As to the geographical position of these localities see the map in the 

 above-mentioned introduction. 



Notes from tlie Leyden JVIiaseum, Vol. XXI. 



