122 BIRDS OF BILLITON. 



tolerably well-explored region , the fauna of this island 

 was still unknown. That was the reason for my visit to 

 the island in the mouth of June 1888 , during which time 

 I not only travelled through the greater part of it, but 

 also chanced to cross to the neighbouring Island of Men- 

 danao, where I spent three days in the vicinity of the 

 light-house, situated on the mountain-ridge. This tolerably 

 large island belongs to the same geological formation as 

 Billiton, and is separated from this latter island by a nar- 

 row passage. 



The ornithological collection, brought together during 

 my stay on Billiton and Mendanao , contains not a single 

 species of which the habitat is restricted to these islands. 

 Of the 93 species, contained in the list, there are 32 

 which are not found in Java, 10 which are not found in 

 Borneo, 8 are not known from Malacca, and only 5 not 

 from Sumatra. The avifauna of Billiton, therefore, seems 

 to agree more with that of Sumatra than with that of 

 Malacca , less with that of Borneo , and the least with that 

 of Java. To my and ray huntsmen's astonishment we found 

 no crows ou the islands, nor any species of Ploceus , nor 

 Sturnopastor jalla and melanopterus , nor Acridotheres gri- 

 seus , all of them species which are tolerably common in Java. 



FAM. FALCONIDAE. 



1. Onychaëtus malay ensis (Reinw.). Billiton. 



2. Haliastur indus (Bodd.). Billiton, Mendanao. Na- 



tive name : Lang. 



FAM. STRIGIDAE. 



3. Scops lempiji (Horsf.j. Billiton, one specimen. 



4. Ketupa javanensis (Less.). Billiton, one specimen. 



FAM. PSITTACIDAE. 



5. Palaeornis longicauda (Bodd.). Native name: 



Bajang. Very common on both islands, generally 10 

 Notes from tlie X-ieyden Museuua, "Vol. XIII. 



