Mearns Descriptions of Eight New Philippine Birds. 85 



lower hind neck extends farther down on the mantle, the white around 

 the base of the bill and surrounding the eye is more extensive, the back 

 and rump are paler and less brownish gray, the wings are paler, grayer 

 and less greenish, and the under tail-coverts less reddish. 



Colors of soft parts. Iris purplish red; region of the nostrils dark plumb 

 eous ; bill light plumbeous; naked eyelid deep vinaceous; bare space 

 around eye plumbeous; feet vinaceous, flesh color on underside of toes ; 

 claws plumbeous. 



Measurements of three adult males from West Bolod Island (topotypes). 

 Length, 456, 456, 460 ; alar expanse, 770, 760, 770; wing, 242, 242, 243 ; tail, 

 180, 180, 178; culmen, 19,21, 19; tarsus, 30, 31, 32; middle toe and claw, 

 48, 49, 45. 



Geographic range. East Bolod and West Bolod islands, off Basilan 

 Island, P. I. 



Caprimulgus affinis mindanensis subsp. nov. 



MINDANAO NIGHTJAR. 



Type No. 190,596, U. S. National Museum. Adult male from Malabang, 

 southern Mindanao, P. I., October 18, 1903. Collected by Edgar A. Mearns. 

 (Original number, 13,071.) 



The Nightjar of Java (Caprimulgus affinis Horsfield) is a wide-ranging 

 island species, subject to considerable variation in the different islands 

 which it inhabits. The present form and C. griseatus G. K. Gray are the 

 most divergent from the typical form, and their status as species, or as 

 subspecies, will depend upon the point of view of different authors respect 

 ing divergent island forms. I am disposed to regard them as races of a 

 common species. 



Adult male.-. Similar to Caprimulgus affinis affinis, but differing as follows : 

 General coloration darker. Upperparts hair brown, finely vermiculated 

 and dotted with clove brown, light gray, and black; scapulars marked with 

 broken spots of cinnamon ; -first four primaries banded across their middle 

 with pure white except the outer web of the first primary, this band vary 

 ing from 12 to 24 millimeters in width on the different feathers, widest on 

 the fourth ; outer tail-feather white only on the terminal half, the basal 

 half being cinnamon, clouded and irregularly cross-banded with brownish 

 black, and the tips of both webs clouded with brownish black ; second 

 feather similar, but with much less of the dusky clouding at tip; lower 

 abdomen and thigh-coverts cross-banded with pale sepia brown ; under 

 tail-coverts and anal region buff, without cross-bands; upper third of tarsus 

 feathered. Total length of skin, 205; wing, 163; tail, 100; culmen, 8; 

 tarsus, 19. 



Individuals vary greatly in the character and size of the punctate and 

 vermiculate markings of the upper surface. The vague black cross-bands 

 of the middle pair of tail-feathers are somewhat V-shaped (open apically), 

 numbering abbut eight. 



In true affinis, adult males have the outer tail-feather all white, and the 

 lower abdomen, thigh-coverts, and under tail-coverts "uniform pale fulvous 



