( I7<1 ) 



•CO. Ninox scutulata (Hafti.)- 

 (??. Bungurau. They agree entirely with Bortieau skias {N. borneeams Bp.), 

 Imt they are, I believe, identical with birds tVoni JIalaeea ami Sumatra. 



Tt>. Pisorhina lempiji (Horsf.) (Nov. Zool. I. j). 481). 

 Buiignrau. 



71. Spilornis pallidus subsp. ? (Walden) (Nov. Zool. I. p. 482). 



A^aiu a uuniber of siieeimeus of a small form of this species arrived. They 

 are all as small as those received formerly, and mcist probably belong to a different 

 species or subspecies, but jiossibly one of those already named. See Berlepsch's 

 remarks, antea, p. T:i I shall try to clear this question up when I am more at 

 leisure. 



•72. Polioaetus humilis (Mlill. & Schleg.). 



One male of this rare species, which is very different from the common 

 /'. ichthyaiUis, from Mt. Ranai (lUOO feet), Bunguran, September 1894. This bird 

 is found from Tenasserim — or even from Cachar, according to Hume— to Sumatra, 

 Borneo, and Celebes. 



*73. Cuncuma leucogaster (Gni.). 

 I'ulu Panjang and Pulu Lant. Widely spread. 



*74. Lophospizia trivirgatus (Temm.). 

 Male, July, Bunguran. Widely spread. 



*75. Osmotreron olax (Temm.). 

 A female from Mt. Ranai, P.iinuuran. Distributed over Malacca, 15orueo, and 

 Sumatra. 



7(;. Osmotreron vernans (L.) (Nov. Zool. I. p. 482). 

 There are males and females from Sinublng, Sibintang, and Pnlu Lant, which 

 all iiave the very long wings mentioned before as occurring in the specimens sent by 

 Everett from Sirhassen and Bunguran. At the same time there is a male from 

 Mt. Ranai and a female from Cape Datu, both localities also on the same island 

 (Bunguran), with the wing about two centimetres siiorter, i;3-9 and 14 against about 

 10 cm. in the larger birds. lUit not only the wings, also the bill, feet, tail— in short 

 the birds are entirely much smaller. Similarly small examples 1 have from the 

 I'adang Hills in West Sumatra, and the sjiccimens l)efore me from Malacca, Borneo, 

 Palawan, Philippines, Sulu, are all below the large Bunguran race, and only slightly 

 (the wing about 2 mm.) larger than the Mt. Ranai male. 



It seems probable that the Natunas are generally iuliabited Ijy a larger race, 

 while in certain i)laces, or maybe with and among them, tlie ordinary race occurs, 

 the latter perliaps consisting of later immigrants. Anyhow the differences in size 

 among the specimens from the Natunas are very striking, and there are no inter- 

 mediate specimens, as far as I can see. 



We require observations and more information about them, esiiecially wliether 

 the large and small ever ]iair together or not. 



