1154 MR. C. E. IIELLMAYR ON THE 



No. 2529. J ad. El Tigre, 320 ft.: 10.ii.09.— Wing 116; 

 tail 103 ; bill 34 mm. 



" Iris dark brown, feet grey-green or blue, maxilla black, tip 

 light brown, mandible grey." 



The two skins agree perfectly with a series from Western 

 Ecuador in the Munich Museum. D. t. cequatorialis is an 

 excellent form, differing in many important details from the 

 typical race of Central Colombia, W, Venezuela, etc. The rump 

 and the wings are much darker chestnut rufous ; the ground- 

 colour of the throat is decidedly buff, instead of whitish ; the dark 

 olive markings on the throat are restricted to small, rounded 

 apical spots, while in the allied D. t. triangidaris the feathers 

 show a continuous, marginal edge, giving a squamate appearance ; 

 the top of the head is wholly unstreaked, plain dark olive, only 

 sometimes with a few buff shaft-lines on the forehead, whereas 

 the typical form has the entire crown conspicuously streaked or 

 spotted with pale buff, etc. 



D. t. punctigula Ridgw. * from Costa Rica and Chiriqui, is 

 most closely related to D. t. cequatorialis, agreeing in the pattern 

 of the throat and in the uniform pileum, but differs in the clearer 

 rufous rump and wings, the deeper olive-green ground-colour, and 

 the smaller, less rounded spots of the lower parts. Single 

 examples are, however, not always distinguishable. 



D. t. triangularis shows a distinct, whitish lateral stripe near 

 the lower edge of the maxilla, while in I), t. cequatot-iaJis and 

 D. t. punctigula the upper bill is uniform dark horn-brown or 

 blackish. This difference is quite constant in the enormous series 

 Avhich I have examined, 



B. t. ceqiiatorialis is strictly confined to the Avestern slopes of 

 the Andes in Ecuador and Southern Colombia. In Ecuador it 

 ranges from sea-level up to about 3500 feet, for we have specimens 

 from Yentana (90 feet) and Bulun (160 feet) as well as from Lita 

 (3200 feet) and Paramba (3500 feet). From Colombia, Avest of 

 the Coast Cordillera, I have seen only Palmer's two skins, one 

 taken at 150, the other at 320 feet elevation t. 



D. t. triangularis inhabits the Central and Eastern Cordillera 

 of Colombia, the mountains of Western Venezuela (Merida, 

 Cumbre de Valencia), the eastern slopes of the Ecuadorian Andes, 

 and Northern Peru. Two specimens from the Cauca slope of the 

 Coast Cordillera — one, fi-om Santa Elena,, in the British Museum, 

 the other, from Riolima, at Tring — also belong to this form, being 

 in every respect typical. Birds from Eastern Ecuador (Machay, 



* Dendrornis punctigula Ridgwaj', Proc. U.S. Mus. xi. p. 544 (1889. — Navaiijo, 

 Costa Rica). 



t My material of D. t. cequatorialis consisted of tlie following specimens : — 

 fi from Chimbo, including the tj'pe (Mus. H. v. Berlepsch & Tring) ; 2 from Cacliabi 

 (Tring) ; 7 Paramba, 6 Lita, 1 Ventana, 5 Bulun (Mus. Tring, Munich, A'ienna, etc.) ; 

 3 Nanegal, 2 Nono, 1 Jntag (Goodfellow coll. — Tring), 2 Choc6, W. Colombia 

 (Munich) : 35 examples in all. 



