672 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXV. 



Description. — Type, adult male. No. 179750, U.S.N.M.; Sikakap 

 Strait, Pagi Islands. December 30, 190-2; Dr. W. L. Abbott. Pileum 

 and sides of head hair brown; upper back, superior tail-coverts and 

 wing-coverts terre verte green; wing-quills and rectrices fuscous, 

 their exposed surfaces when closed mostly bluish myrtle green ; lower 

 back and rump nile blue; chin cream buff; throat, jugulum, and a 

 cervical collar deep buff, shading into ochraceous on breast, abdomen, 

 and lower tail-coverts; lining of wing ochraceous. 



Measurements of the type series are as follows: 



Localit v 



Sikakap Strait, Pagils- 

 landsb 



Sikakap Strait. North 



Pagi Island 



North Pagi Island, Pagi 



Islandsi 



South Pagi Island. Pagi 



Islands 



do .. 



do 



\verage of six males. 



South Pagi Island. Pagi 

 Islands. 



North Pagi Island, Pagi 

 Islands 



Vverage of two fe- 

 males 



Dec. 30,1902 



Nov. 11,1902 



Jan. 1,1903 



Dec. 3, 1902 

 Dec. 5,1902 

 Dec. 10.1902 



Nov. 19, 19(12 

 NOV. 20.1902 



" Type. 



Geographical distribution. — North and South Pagi islands, westera 

 coast of Sumatra. 



This new form differs noticeably from Ramphalcyon capensis sol 

 dalis in its smaller size and paler, less uniform lower surface. From 

 Ramphalcyon c. gurial it may readily be distinguished by its smaller 

 si/e. darker back and wings, paler pileum, and less whitish throat; 

 from R. c. burmanica by smaller si/e, much paler, less uniform lower 

 surface, darker hack and wings; and from Ramphalcyon capensis 

 capensis still more easily by reason of its larger size, much duller and 

 greenish instead of bluish upper back, wings, and tail, lighter, more 

 greenish lower back and rump, brown-capped pileum with little or 

 no wash of ochraceous. and paler lower parts. 



In geographical position this is the most southeastern of the races 

 that have their home on the islands off the western coast of Sumatra, 

 and it exhibits an interesting combination of characters. In size it 

 is nearest Ramphalcyon capensis cyanopteryx, the mainland form 

 from northwestern Sumatra above described ; in the color of the lower 

 surface i( is almost exactly a counterpart of the bird from Xias, while 

 in the shade of upper back, wings, and tail it is almost indistinguish- 



