( 23 ) 

 TWO NEW AUSTRALIAN BIRDS. 



Ky (JREGORY M. MATHEWS. 



1. Gerygone albigularis rogersi sulisp. nov. 



Differs from G. a. alhiijularis Gould in being paler above and mucb smaller 

 ill size. The average measurement of the wing of G. a. alh'ujidaris is OU mm , 

 that of G. a. roger^i being 5o ram. 



Ilab. Derb}-, North-West Australia. 



Type : No. 63.jU in my own collection. 



Collected by and called iu honour of Mr. J. P. Rogers, my collector for 

 many years. 



The following is a description of the nest and eggs of the above bird ; the 

 clutch also contained an egg of CI(alcococci/x miKitfilliis Gould. 



The nest was situated iu a j)aper-bark tree, about 4 feet from the ground, 

 and was suspended from a pendent twig. It was composed of fine strips of 

 paper-bark, cow-hair, and pieces of native silk, and the edges of the nest were 

 woven into the branch from which it hung. It was first lined with a layer of 

 rootlets and stiff grass, and then a layer of cow-hair and rootlets, and then some 

 silk-like native cotton. The entrance was in the side, and had a hood over the 

 hole. A ' tail-piece ' about 5 inches long hnng from the bottom of the nest. 

 Dimensions: outside, 2J inches x ','J and .51 inches deep; inside, 11 inches x IJ 

 and 21 inches deep. Taken December 0, lUlO, at Derby, North- West Australia. 

 The eggs are clutch three : ground-colour, white with a zone of red, irregular 

 shaped spots round the larger end ; and these spots also sparingly distributed 

 over the rest of the surface. Dimensions : 1 60 x 11 mm. The clutch also 

 contained an egg of Chalcococajx miiuitillii^, which is of a lighter colour than 

 the egg of C. jAayosus. The measurements are 19 x 12 mm. 



This bird is not the same as Gerifjone ciiierascens Sharpe (I have examined 

 the type), which does not occur in Australia, but was so called by Dr. Hartert 

 {Xoc. Zool. xii. p. 221), and by myseU (£mii, ix. p. .5i), 1909). 



2. Alisterus cyanopygius minor subsp. nov. 



Differs from A. c. cyanopygius Vieillot iu its much smaller size. Measurements 

 of the wing of six males of A. c. cyaaopyyias gives 209 to 216 mm.; that of the 

 same number of A. c. minor gives 188 to 198 mm. 



Hub. Cairns, North Queensland. 



Type : No. 332 in my own collection. 



I take the opportunity of giving a description of the eggs of Po'cphila 

 pcrsonnta bdchiiri Mathews : 



Clutch four, white, without gloss; 18 — 10 by 13—12 mm. 



