\ COLLECTION OF BIRDS FROM N. E. SUMATRA. 83 



BUBONIDAE. 



32. Huhua orientalis sumatrana (Raffles). 



Robinson and Kloss, p. 124; Hartert, p. 195. 

 $ Mabar Estate, Deli, N. E. Sumatra, 23rd March 1917 



[No. 175]. 

 $ wing, 352 mm. 



Sumatran and Malay Peninsula birds agree with each 

 other and are slightly smaller than the typical Javan race H. 

 o. orientalis (Raffles). Bornean birds, which at present have 

 no name are rather paler beneath. 



S3. Ninox scutulata malaccensis(Eyton). 

 Ninox scutulata, Hartert, p. 195. 



Robinson, Journ. Fed. Malay States Mus. VII, p. 144 

 (1917). 



$ , 2 $ Tandjong Morawa, Serdang, N. E. Sumatra, 

 27th February— 18th March 1917 [Xos. 87, 88, 159]. 



$ , 9 Polonia, Deli, N. E. Sumatra, 7th November 1916. 



S ? 9 Toentoengan, Deli, iN". E. Sumatra, 29th January 

 —31st March 1918 [Nos. 962, 1033]. 



Wing $ 180, 185, 192; 9, 190, 193, 194, 192. 



These owls do not strictly agree with either N. s. malac- 

 censis or N. s. scutulata. In size and in the character of the 

 white stripes on the under surface, which are not very con- 

 spicuous, they are nearest the former; in their upper surface 

 which is darker, with the head rather greyer forming a quite 

 perceptible cap they are closest to N. s. scutulata, which is a 

 migratory form. Possibly these specimens represent a resi- 

 dent Sumatran race. For the present we place them with N. 

 s. malaccensis on account of their size. 



34. Otus bakkamoena Iempiji(Horsf.). 



Pisorhina lempiji, Hartert, p. 196 ; Robinson and Kloss, 



p. 125; Robinson op. cit. VII, p. 145 (1917). 

 2 $ , $ Polonia, Deli, N. E. Sumatra. 26th February — 



7th April 1917 [Nos. 79, 190, 237]. 

 $ 9 juv. No exact locality, 4th May — 7th August 1916. 

 $ Toentoengan, Deli, N. E. Sumatra, 7th March 1918 



[No. 1031]. 

 Wing, $ 146, 146, 142; 2 143, 152 mm. 

 These birds seem typical O. o. lempiji with the wing less 

 than 160 mm., and not the northern form O. o. lettiu (Hodgs.) 

 which quite possibly visits Sumatra on migration. The young 

 bird and one other are in the grey, the others in the brown 

 phase of plumage. 



35. Ketupa ketupa(Horsf.). 



Hartert, p. 196. 



$ , $ imm. Polonia, Deli, 1ST. E. Sumatra, 13th May — 

 6th November 1916 [Nos. — , — ]. 

 Wing, $ , 320 mm. 



R. A. Soc, No. 80, 1919. 



