CO Campbell, Dichoto)nous Key. 



Forehead brown, like crown ; throat thickly spotted. 



5. maculata (Spotted Scriib-Wren). 



715. No dark sub terminal band on tail 



Obscure subterminal band on outer tail feathers ; head and back 

 olive, not like rump . . 



716. Broad black crescent on lower throat ; wing 2.4 inches. 



S. giittiiralis (Collared Scrub- Wren). 

 No black crescent on lower throat ; head and back rich brown, like 

 rump 



717. Length 4.5 inches ; wing 2.35 inches. 



S. frontalis (White-browed Scrub-Wren). 

 Length less than 4.5 inches : wing more than 2.4 inches. 



S. minimus (Little Scrub- Wren). 



718. Upper throat white ; abdomen whitish ; flanks brown ; legs light 



brown. 5. osculans (Allied Scrub-Wren). 



Upper throat speckled like lower ; abdomen and flanks olive ; 



legs dark brown. S. liinnilis (Brown Scrub-Wren). 



719. Dark band over nearly half of tail . . 

 Dark band narrow and subterminal . . 



720. Rump bright yellow 

 Rump rufous or light fawn 



721. Length 3.8 inches ; wing 2.25 inches ; forehead black, with white 



spots ; abdomen brownish-white. 



A. chrysorrhoa (Yellow-rumped Tit or Tom-Tit), 



Length 3.6 inches ; wing 2.3 inches ; forehead not black and spots 



few: abdomen white. A. pallida (Western Tom-Tit). 



722. Base of tail rufous, like tail coverts . . 

 Base of tail fawn ; tail coverts dull yellow. 



723. Forehead with white half-circles. 



A. uropvgialis (Chestnut-rumpcd Tit). 

 Crown and forehead striated with black. 



A. rohtistirostris (Thick-l)illed Tit). 



724. Length 4 inches ; wing 2 inches ; bill .4 inch ; upper tail coverts 



ochreous 

 Length 3.5 inches ; wing 1.9 inches ; bill .3 inch ; upper tail coverts 

 yellowish white. .4. temiirostris (Western Buff-rumped Tit). 



725. Length 4 inches ; tarsus .7 inch ; feathers of throat uniform. 



A. rcgitloidcs (Buff-rumped Tit). 



Length 4.7 inches ; tarsus .5 inch ; feathers of throat with dark 



edges. A. squamata (Scaly-breasted Tit). 



726. Throat ashy or yellowish-white, often flecked with black 

 Throat pale rufous, with fine white shaft streaks. 



A. nana (Little Tit.) 



727. Crown like back except for scale-like marks on forehead . . 



Crown rufous with white shaft streaks. A. liiicata (Striated Tit). 



728. Tail feathers with distinct white tips 

 Tail feathers not tipped white 



729. Forehead feathers black with whitish margins. 



A. apicalis (Broad-tailed Tit). 

 Forehead feathers rufous with dusky margins. 



A. pyrrhopygia (Red-rumped Tit). 



