Riley — Six New Birds from Celebes and Java. 95 



(32.6); tarsus, 24-26 (24.8); middle toe, 17-19 (18.2). From the above it 

 will be seen how greatly the two above species differ in size; differences 

 that can not be explained in any other way than that the smaller bird is 

 specifically distinct. 



Pachycephala pluviosa, sp. nov. 



Type, adult male, U. S. National Museum, No. 252,197, Rano Rano, 

 Celebes, December 22, 1917. Collected by H. C. Raven (original No. 

 4834). 



Pileum and auriculars medal bronze, shading into buffy brown on the 

 foreneck; across upper back a band of deep neutral gray; rest of back 

 warbler green, becoming more yellowish on the rump; breast neutral gray, 

 becoming much lighter on the abdomen; under tail-coverts cinnamon; 

 flanks pyrite yellow; wings fuscous-black, the feathers edged outwardly 

 with the color of the back, this edging on the outer primaries very narrow 

 and grayish towards the tips; under wing-coverts and the inner margins 

 of the remiges where they rest against the body, cinnamon; tail above deep 

 neutral gray, the outer feathers fuscous-black on the inner web. Wing, 

 81.5; tail, 67; culmen, 13; tarsus, 21; middle toe, 13.5 mm. 



The female resembles the male, except the pileum is saccardo's olive 

 with a yellowish wash and the chin and throat cinnamon-buff, streaked 

 with deep neutral gray. 



Remarks. — The above species is founded upon a good series of both sexes 

 and one immature, all from the type locality. It is evidently similar to 

 Pachycephala bonthaina of south Celebes, but the pileum and throat are 

 brown, not greenish yellow-olive. Pachycephala bonensis of north Celebes 

 was described from an immature specimen. The immature specimen of 

 Pachycephala pluviosa when compared with the plate of Pachycephala 

 bonensis in Meyer and Wiglesworth 1 presents a number of differences; the 

 former has the pileum saccardo's olive, the auriculars are like the pileum, 

 there are no cinnamon edgings to the outer primaries, the breast is without 

 a buffy-cinnamon band down the center, and there are other differences. 



Zosterops atrifrons surda, subsp. nov. 



Type, adult male, U. S. National Museum, No. 251,158, Rano Lindoe 

 Celebes, March 24, 1917. Collected by H. C. Raven (original No 4045). 



Similar to Zosterops atrifrons Wallace, but larger, throat duller yellow, 

 the chest grayer, the white eye-ring narrower, the black sub-orbital streak 

 more diffused, and the back more greenish. Wing 57; tail, 39.5; culmen, 

 11; tarsus, 17; middle toe, 10 mm 



Remarks. — The type of Zosterops atrifrons Wallace came from Menado. 

 In the present collection there is a good series from north Celebes and also 

 from the north-central mountainous part of the island. These two series 

 when compared are strikingly different to the eye though hard to dis- 

 criminate in words. 



IBirdfl Celebes, 2, 1898, pi. 18. 



