NOVITATES ZOOLOGICAE XXIV. Ini7. 413 



mens to belong to tj'pical aiyanerusis. Our Bogota examples do not differ from 

 the W. Ecuadorian hellmayri, but it is quite possible that both the latter and 

 M. c. cayanensis are found in Bogota collections. The collections that are, or 

 were, made by Indians and sent from Bogota, are not all brought together near 

 Bogota ; we know that the collectors used to go do^ni into the valley of the 

 Rio Meta — where typical cayanensis or rufipennis might possibly occur — -and 

 westwards into the Cauca Valley, where hellmarjri is found. 



We have three skins from Panama (2 Savannah near Panama, Andre coll., 

 one Panama, Nelson coll.) which have hardly any rufous on the wing, and 

 appear perhaps to be smaller (wing, S 86, ? 84 mm.), while the uppersidc is rather 

 greyish olive. We believe these to belong to another subspecies, but do not 

 consider the material available sufficient for decision. 



7. Forms of Leptopogon superciliaris. 



Twice recently remarks have been published on the subspecies of Lcpto- 

 qwgon sujierciliaris, first by Ridgway (Birds of North and Middle Amer. iv. p. 466 

 (1907) ), then by Hellmayr (Proc. Zool. Soc. London, 1911. vol. ii. p. 1 1.12). Neither 

 of these meet the case fully, as exhibited by the series in the Tring Museum. 

 The colour of the tips of the wing-coverts is generally quite constant, as stated 

 by Ridgway, and varies only slightly in certain Iccahties, but not in a series, 

 from the pale primrose-yellow of the Venezuelan form to the rich buff of the 

 West Ecuadorian birds. 



Two males from Huanibo and Pozuzo, collected by Stolzmann and W. Hoff- 

 manns, we take to be typical superciliaris. From these the West Ecuadorian 

 form differs only slightly by the more olivaceous green throat and chest antl a 

 less cinereous crown. Specimens from Bogota collections and Costa Rica 

 seem to be identical with each other, unless the crown of the head in the latter 

 is more greenish, less slaty ; if separable from the West Ecuadorian form, which 

 seems to have less white on the forehead, the Bogota bird would, of course, 

 have to be called Leptopogon superciliaris poliocephalns. 



Our seven skins from Venezuela fCumana, Caripe, and Cumbrc de Valencia 

 near Puerto Cabello) dift'er from all the.se by their pale primrose-yellow tips to 

 the outer webs of the greater upper wing-coverts and outer margins of the secon- 

 daries, and more whitish throat and more yellowish, less olivaceous, chest. The 

 crown of the head is slate-coloured, more cinereous than in the West Ecuadorian 

 race, but agrees with the skins from Bogota collections, from which they merely 

 differ by the pale spots to the wing-coverts and edges to the secondaries. The 

 wings vary remarkably: <J Cumana (Andre coll.), 69; 3 Cumbre de Valencia 

 (S, M. Klages coU.), 65 mm.; sujjposed females from Cumana and Caripe, 

 61-72; $ Cumbre dc Valencia, 63 mm. 



We name the North Venezuelan form : 



Leptopogon superciliaris venezuelensis subsp. nov. 



Type : Cumbre de Valencia near Puerto Cabello, 11. i. 1910, S. 31. Klages 

 coll. (In the Tring Museum.) 



We are not at all sure about two skins collected by Ockenden at Santo 

 Domingo, Carabaya (in June), and Caradoc, Marcapata (in March). The 

 former has the wing-spots quite pale, the latter more buff ; the former has the 



