18.1 McGregor: Philippine Birds, III 79 
Subgenus NEOXEOCEPHUS novum 
Subgeneric characters.—Similar to Xeocephus, but crest full 
and long, the feathers loose and hairlike; eye wattle (if present) 
very narrow; tail strongly graduated, but central pair of rec- 
trices not known to be greatly lengthened. The type and only 
species is Zeocephus cyanescens Sharpe. 
Xeocephus cyanescens Sharpe. 
This species is confined to Palawan and the Calamianes; the 
distribution, together with the entirely different coloration, 
would suggest the generic or subgeneric separation of the spe- 
cies from Xeoeephus. Whether or not the adult male of this 
species has streamerlike central rectrices seems to be unknown. 
I have examined seven males collected in January, February, 
July, and December, and find the rectrices moderately graduated 
in all of them. There is no suggestion of the central pair being 
streamerlike. 
The predominant color of Xeocephus cyanescens is blue. The 
immature plumage differs considerably from that of the adult. 
A male collected in Palawan on July 1, 1910, shows that in the 
young the wings and upper parts are brown, while the blue of 
the throat, breast, and abdomen is very pale. The back and 
wings are tawny to ochraceous tawny; primaries dark brown; 
upper tail coverts and rectrices russet; head, chin, and throat 
covered with short pin feathers that do not indicate any color; 
breast and sides deep Dutch blue, fading to white on abdomen; 
under tail coverts white, washed with clay color. The remiges 
are much worn except the eighth and ninth primaries which are 
fresh blue feathers of the adult plumage; a few of the primary 
and secondary coverts are also of the new blue plumage. 
I propose a subgeneric name for this blue flycatcher to call 
attention to its difference from typical Xeocephus, but my 
opinion is that both Callaeops and Xeocephus should be consid- 
- ered as no more than subgenera of Terpsiphone. 
Terpsiphone periopthalmica (Grant). Plate 4. 
Callaeops periopthalmica GRANT, Bull. Brit. Orn. Club 4 (1895) 18; 
Ibis VII 1 (1895) 253 (not “275”); WwHiTeHEAD, Ibis VII 5 
(1899) 108; SHARPE, Hand-List 3 (1901) 263; McGrecor and 
Worcester, Hand-list Philip. Bds. (1906) 74 (not “94”"); Mco- 
Grecor, Man. Philip. Bds. (1910) 464; HARTERT, Novit. Zool. 23 
(1916) 835, pl. 1; RicHMonp, Auk 34 (1917) 215, 
Callxops periopthalmica Dusors, Synop. Av. 1* (1900) 288. 
Terpsiphone nigra McGrecor, Philip. Journ. Sci. § A 2 (1907) 340, 
pls. 1-8; Man. Philip. Bds. (1910) 466. 
