26 



he also secured specimens of two other species of interest. One 

 of these is a cuckoo which is identical with Centropus steerii of 

 Mindoro, the other is a distinct variety of Chibia, which I take 

 pleasure in naming after its discoverer. 



The presence of Centropus mindorensis and lole mindorensis is 

 very decided evidence in favor of uniting Semerara with Mindoro. 

 The discovery of a Chibia in this island suggests that Semerara may 

 have been one of the stepping-stones by which the genus reached 

 Tablas from the Cuyos or from the Calamianes. 



LIST OF BIRDS NOTED ON SEMERABA NOVEMBER 12, 1904. 



Gallinago sp. lole sp. (See following list.) 



Haliaetus leucogaster (Gmel.). Cisticola exilis (Vig. and Horsf.). 



Halcyon chloris (Bodd.). Anthus rufulus (Vieill.). 



Endynamis mindanensis (Linn.). Oriolus chinensis Linn. 



A SECOND LIST OF BIRDS FROM SEMERARA, NOTED BY DEAN 0. 

 WORCESTER, JULY 24, 1905. 



Chibia worcesteri new species. 



Type. — Adult male, No. 10508, Government Laboratories Collec- 

 tion; Semerara Island, Mindoro Province, Philippines; July 34, 

 1905; Dean C. Worcester. 



Specific characters. — Closely related to Chibia cuyensis McGregor, 

 but wing longer and outer tail feather much more recurved ; similar 

 to Chibia palawanensis Tweeddale, but tail longer and its outer 

 feather more recurved, bill longer and deeper. 



Description of type. — Entire plumage black, with dark bluish 

 gloss on head and on tips of breast and neck feathers; wings and 

 tail glossed with dark green; back, dull black without any gloss. 

 "Eyes dark brown; bill, legs, and feet black; length, 11.5 inches." 

 Wing, 5.90 inches; tail, 5.40; middle rectrices, 4.74; bill from 

 nostril, 0.82; culmen, 1.20; depth of bill at angle of gonys, 0.42. 



I have placed this species in the genus Chibia because of its 

 general coloration and its much recurved outer tail feather. Pos- 

 sibly it belongs in Dicrurus, but with the material at hand I can not 

 come to this conclusion unless Chibia be united to Dicrurus.^ 



^Dubois, Syn. Av., p. 529, unites both Chihia and Buchanga with 

 Dicrurus, a proceeding which gives satisfactory results when applied to the 

 Philippine species of those genera. 



