Birds of the Philippine Islands. 229 



[Iris light brown ; bill brownish black, mandible pinkish 

 brown ; legs yellowish flesh-colour. This bird has a sweet 

 and powerful song, and in this respect it differs from the 

 following species. It is very shy and difficult to obtain. — 

 J. W.] 



26. Orthotomus frontalis, Sharpe ; Sharpe, Cat. B. 

 Brit. Mus. vii. p. 220 (1883) ; Steere, List Birds & Mamm. 

 Philippines, p. 20 (1890). 



The Chestnut-fronted Tailor-bird is represented in both 

 collections. 



[Iris light brown; bill black, lower mandible greyish 

 pink ; legs pinkish brown. — J. W.] 



The following key to the species of Orthotomus found in 

 the Philippines will, I hope, facilitate their identification :— 



I. Crown and nape black. 



A. Upper throat white, fore neck deep black ; 



breast and rest of underparts bright yellow . O. samarensis. 



B. Throat and fore neck mottled with black and 



white ; breast greyish white, shading into 



olive-yellow on the sides and flanks O. nigriceps. 



II. Crown and nape dark grey. 



C. Forehead grey like the crown ; chin and 



throat black O. cinereiceps. 



D. Forehead and feathers surrounding the eye 



rich chestnut O. frontalis. 



III. Entire crown and forehead chestnut. 



E. Tail chestnut, or chestnut margined with olive 



towards the base. 



a. Undei*parts uniform whitish buff ; back en- 



tirely grey O. ryjkeps. 



b, Underparts grey, with white shaft-streaks. 



a'. Back grey O. derbmnus. 



b'. Back green O. chloronotuf. 



F. Tail brownish, strongly margined with olive ; 



upper back grey, shading into olive on the 

 lower back and rump * ; underparts white, 

 only the chest-feathers being edged with 

 grey O. castaneiceps. 



* The amount of green varies in different individuals, as mentioned in 

 my previous paper (Ibis, 1896, p. 549). 



SER. Vn. VOL. III. R 



