CHIBIA. 707 
722. CHIBIA WORCESTERI McGregor. 
WORCESTER’S DRONGO. 
- ‘Chibia worcesteri McGrecor, Bur. Govt. Laboratories (1905), 34, 26; 
McGrecor and WorcEsTER, Hand-List (1906), 107. 
Semirara (Worcester). 
Male.—Similar to Chibia cuyensis and to C. palawanensis, but with 
the outermost rectrices more recurved than in either of these; wing longer 
than in C. cuyensis; bill longer and deeper than in C. palawanensis. 
The type and only specimen measures: Length, 292; wing, 150; tail, 
136; bill from nostril, 22; depth of bill at nostril, 11; tarsus, 24; dif- 
ference in length between the middle and outermost rectrices, 20. 
723. CHIBIA BORNEENSIS Sharpe. 
BORNEAN DRONGO. 
Chibia borneensis SHARPE, Proc. Zool. Soc. (1879), 246; WoRCESTER and 
Bourns, Proce. U. S. Nat. Mus. Wash. (1898), 20, 558, no. 298; Mc- 
GREGOR and WorcESTER, Hand-List (1906), 107. 
Chibia pectoralis GUILLEMARD, Proc. Zool. Soc. (1885), 259, 418. 
Chibia cagayanensis MEARNS, Proc. U. S. Nat. Mus. (1909), 36, 447.* 
Bongao (Everett); Cagayan Sulu (Guillemard, Mearns); Sibutu (Everett) ; 
Tawi Tawi (Bourns & Worcester). Borneo. 
Similar to C. pectoralis (Sula Island), “but it may be recognized on 
comparison by the much smaller and more metallic spots on the throat 
and fore neck, which are steel-green, as also are the neck-hackles. In 
C. pectoralis the spangles are large, dull, and inclined to purplish in 
tint. This species appears to me to be a thorough Chibia. * * *.” 
(Sharpe.) 
“The young bird from Kina Balu differs from the adult in being 
duller black, with fewer and less metallic chest-spots and hackles.” 
(Sharpe.)+ 
* This recently published description is based upon one specimen and the species 
is compared with neither Chibia borneensis nor OC. pectoralis. Mearns’s description 
follows: 
“Characters.—Very similar to Chibia palawanensis, differing only in its 
somewhat larger size, shallower forking of the tail, the narrower and very much 
smaller spangles on the breast, and in the absence of metallic green on the upper 
tail-coverts. 
“Measurements of skin (type and only specimen).—Length, 260; wing, 136; 
tail, 126; emargination of tail, 16; culmen (chord), 28.5; tarsus, 24.5.” (Mearns.) 
+ The description of Chibia borneensis follows: “C. similis C. pectorali ex insulis 
Sulaensibus, sed plumis lanceolatis colli lateralis metallice chalybeo-viridibus nec 
purpurascentibus, et maculis jugularibus et praepectoralibus valde minoribus et 
conspicue metallicis chalybeo-viridibus distinguenda. Long. tot. 10, culm. 1.3, 
alae 5.9, caudae, 4.5, tarsi 0.85.” (Sharpe.) ; 
