LÖNNBERG AND RENDAHL, ORNITHOLOGY OF ECUADOR. 33 



the different plumages in all ages of this very Hawk-like 

 Harrier. It appears to occur chiefly at rather high altitudes. 



Micrastur melanoleucus Vieill. — A young male from 

 below Gualea, altitude 3000, f., coUected 7io l^l'^ agrees com- 

 pletely with Gurney's description (The Ibis, 1879, p. 173) 

 of Micrastiir amaurus, which has been considered to be a 

 melanistic phase of tliis species. 



Another unsexed specimen collected 7i2 ^^ Nanegal 5000 

 f. is entirely different. It represents a somewhat older stage 

 than the one described as young in Cat. Birds. It is black 

 above, white beneath. The »tawny rufous» bars of the back 

 and the wing-coverts have disappeared, and the coUar is 

 2)ure white, spotted with blackish. The wings are in moult, 

 the older quills display the crossbars of the juvenile plumage 

 on both webs, but the new quills (secondaries) are black 

 with incomplete white bars on the inner web. The long upper 

 tail-coverts are black with a few white spöts and white tip, 

 the shorter ones are unspotted. There is no »rufous wash» 

 on the breast the colour of these parts being pure white with 

 broad black er oss-bars and blackish shafts. On the flanks 

 these bars get reduced to longitudinal spöts near the shafts. 

 The same is the case with the under tail-coverts. The sides 

 of the face and the upper ear-coverts are white, thinly over- 

 laid with blackish. In other respects this specimen agrees 

 with the young one described in Cat. Birds B. M., which latter 

 no doubt represents the next previous plumage. 



We cannot pass further without remarking about the 

 very striking resemblance which this specimen offers with 

 Sclater's plate of his Äccipiter collaris (The Ibis, 1860, Pl. 6) 

 with regard to the general colour-pattern, and also the heaviness 

 of the bill. The structure of the tarsi and toes as well as the 

 very long tail (257 mm.) of our specimen etc. prove, how- 

 ever, that it really is a typical Micrastur, 



Climacocercus guerilla interstes Bångs. — Two males from 

 Gualea, resp. 7i & ^^U i^^^- ^^^^ ^•) have the dark bars well 

 developed, even on the lower tail-coverts and may for this 

 reason be considered as typical members of this race. A 

 young male is collected near the same place "/jg, and another 

 in transitory plumage 7ij while a third young male is collec- 

 ted at Verdecocha, western side of Pichincha, 10000 f., -/i- 



Arkiv för zoologi. Band 14. N:o 25. 3 



