448 MANUAL OF PHILIPPINE BIRDS. 



dark plumbeous. A male from Laguna de Bay measures: Length, \2'i; 

 wing, 51 ; tail, 36 ; culmen from base, 12. 



Young. Lubang Island, October 25, 1902. A young bird just able 

 to fly, resembles the adult and differs only in having the under parts 

 very much paler yellow. 



This little flycatcher closely resembles the species of Zosterops in 

 habits, but it is less common in occurrence. At times small flocks are 

 found feeding in chimps of bamboo or in high mangrove thickets. It 

 has a pleasing note by means of which the members of a flock are kept 

 together. In its active movements from tree to tree it resembles the 

 titmice, but we have never found Gerygone in forest. The type of the 

 species was collected in Luzon by Jagor. 



"The Philippine gerygone was common about bamboo clumps in the 

 open fields of Luzon. Five males from Luzon average as follows : Wing, 

 51; tail, 38; culmen, 12; tarsus, 14; middle toe with claw, 12. Five 

 females, wing, 52; tail, 37; culmen, 12; tarsus, 16; middle toe with 

 claw, 16. Iris, legs, feet, and nails black; bill black." (Bourns and 

 Worcester MS.) 



410. GERYGONE RHIZOPHOR/E Mearns. 

 MANGROVE GERYGONE. 



f Gerygone flaveola GUILLEMABD, Proc. Zool. Soc. (1885), 263. 



Qerygone simplex WORCESTER and BOURNS, Proc. U. S. Nat. Mus. (1898), 

 20, 563 (part). 



Gerygone rhizophorce MEARNS, Proc. Biol. Soc. Wash. (1905), 18, 7; MC- 

 GREGOR and WORCESTER, Hand-List (1906), 72. 



Bongao (Everett); Mindanao ( M earns ); Sulu (Guillemard, Bourns and Wor- 

 cester) . 



"Adult male and female (seven specimens). Upper parts, including 

 entire top and sides of head, ashy brown tinged with olive; upper tail- 

 coverts browner; sides of neck yellowish olive; tail-feathers drab, sub- 

 terminally and broadly banded witji blackish, tipped with drab-gray, 

 and with a white spot near the end of the inner web of all [each of] 

 the tail-feathers except the innermost pair; wing-coverts like the back; 

 quills darker brown and narrowly edged with olive; whole under parts 

 straw-yellow except the crissum which is almost white; lining and edge 

 of wing yellowish white; thighs mixed straw-color and olive-brown; inner 

 edge of quills whitish. Measurements of male: Wing, 50; tail, 39; cul- 

 men, 10.5; tarsus, 16." (Mearns.) 



A female from Zamboanga is the only example of this species examined 

 by me. In this specimen the crown is slightly darker than in specimens 

 of G. simplex from Mindoro, Luzon, and Lubang with which I have 

 compared it. Unfortunately Mearns does not compare his species with 

 G. simplex which is probably its nearest relative. Guillermard records 

 a gerygone from Sulu as G. flaveola, and his specimen? we IT. perhaps, 

 the same as G. rhizophorce. 



