ART. 16. 



BIRDS FEOM NOETH CELEBES RILEY. 



19 



31, 191T; one male and one female, Rano Lindoe, March 14 and 22, 

 1917. 



Besides the above series, the United States National Museum con- 

 tains a male, a female, and an unsexed specimen from Celebes, but I 

 only have available for comparison two males and two females irom 

 Luzon, besides a few additional specimens from the other parts of 

 the extensive range of the species. The latter I am disregarding and 

 will confine myself to a comparison of the Philippine and Celebes 

 material. Mathews's ^^ diagnosis of the Philippine bird does not 

 agree with the specimens before me in numerous particulars, only 

 two of which I will mention. The secondaries in none of the speci- 

 mens before me reach the tips of the primaries by a considerable 

 margin nor are the flanks and breast washed with olive-brown. That 

 some of the characters relied upon by Mathews as geographic are 

 really seasonable or age characters, I am convinced. That the tawny 

 pectoral band is not entirely absent from Celebes specimens is proven 

 by a female (No. 248,148) from Kwandang, in which it is strongly 

 marked. 



The only differences that I can see between Celebes and Luzon 

 birds is the darker olive edgings of the feathers of the back, the 

 average darker head and nape, and apparently heavier barring below 

 of the former. The measurements seem to indicate a bird with 

 slightly longer tarsus and middle-toe in Celebes, though the series 

 are too unequal to be conclusive. 



That there are geographic forms in the extensive range of the 

 species there is no doubt, but that Mathews's treatment of them is 

 only tentative is equally certain, as it is not founded upon the ex- 

 amination of a sufficient number of specimens. I prefer to recognize 

 a race tentatively rather than to suppress it, even though the differ- 

 ences are slight. 



The two series average as follows : 



Two males from Luzon 



Three males from Celebes. 

 Two females from Luzon _ 

 Five females from Celebes 



Middle 

 toe. 



mm. 

 34.2 

 37.5 

 34.2 

 35.4 



24. HYPOTAENIDIA CELEBENSIS CELEBENSIS (Quoy and Gaimard). 



One adult mule, Kwandang, October 24, 1914; one slightly im- 

 mature male, Rano Lindoe, April 1, 1917. 



" Birds of Australia, vol. 1, 1911, p. 198. 



