22 PROCEEDINGS OF THE NATIONAL. MUSEUM vol 75 



bill. Five males and two females from east Sumatra measure: 

 Wing, 119-130.5 (125) ; culmen, 26-29 (28) mm. The two males 

 from Nias: Wing, 118-119; culmen, 25-26 mm. The female from 

 Pulo Tuanku: Wing, 117.5; culmen, 25 mm. There are apparently 

 no constant color differences. 



The type of P. m. lepta ]ias blackish central strips on the feathers 

 of the mantle and some of the middle wing coverts have a deep green 

 central stripe. The Pulo Tuanku specimen i^ similar and I have 

 found a few mainland specimens in like condition; possibly an age 

 character. 



HIRUNDO RUSTICA GUTTURALIS Scopoli 



Hirundo gutUiralis Scopoli, Del. F!or. et Faun. Insubr., vol. 2, 1786, p. 93 



(New Guinea). 

 Hirundo rustica fftitturalis Chasen and Kloss, Ibis, 1926, p. 286. 



One female, Siberut, September 17. 



ARIZELOMYIA LATIROSTRIS LATIROSTRIS (Raffles) 



Muscicapa latirostris Raffles, Trans. Linn. Soc. London, vol. 13, 1821, p. 



312 (Sumatra). 

 Alseonax latirostris Ckasen and Kloss, Ibis, 1926, p. 286. 



One male (so marked on label), Siberut. 



This is a very brown-backed bird, the chest with dusky streaks. 

 The upper parts are browner than in any specimen with which I have 

 been able to compare it. It is a bird of the year in fresh autumnal 

 plumage which may account for the browner, more ferruginous 

 plumage. 



MUSCITREA GRISOLA VANDEPOLLI (Finsch) 



Pachycephala vandepolU Finsch, Notes Leyden Mus., vol. 20, 1899, p. 224 



(Pulo Tello, Batu Islands). 

 Muscitrea grisola nesiotis Oberholseb, Smiths. Misc. Coll., vol. 60, no. 7, 1912, 



p. 11 (Sibabo Bay, Simalur Island). 

 Muscitrea grisola grisola Chasen and Kloss, Ibis, 1926, p. 287. 



One male and one female, Siberut, 



Muscitrea grisola 7iesiotis was founded upon a male and female and 

 while they are browner on the upper parts and the head is duller, 

 browner gray than in Muscitrea grisola grisola from the mainland 

 on an average, yet there are specimens of the latter that match them 

 in this respect. The Simalur specimens have a larger bill, however. 

 The description of Pachycephala vandepolU Finsch ^^ seems to fit it 

 very well, though the measurements given for the culmen are some- 

 what smaller than those I obtain for the Simalur male, but this 

 apparent difference may be due to employing a different method of 

 measurement. 



«i Notes Leyden Museum, vol. 20, 1899, p. 224. 



