(243 ) 



by lacking the blackish cap (the feathers of the pileum being olive-green like 

 the back, with inconspicuous dusky central spots), by its decidedly lighter, more 

 greenish brown back, somewhat paler yellow frontal band, and by having the flanks 

 slightly washed with brownish. The absence of the dusky cap may be due to 

 immaturity, but the other characters, though slight, serve to distinguish 0. d.jesupi 

 from the young of 0. diadema. The upper wing-coverts are but obsoletely margined 

 with the colour of the back. 



0. diadema gratiosa differs from the Santa Marta bird by its blackish cap, 

 much darker, rufescent olive back, more greenish breast (without yellowish 

 admixture), and by having the greater wing-coverts broadly tipped with cinnamon 

 rufous. 



The three " species " replacing each other geographically are more properly 

 designated by trinomials. 



(a) 0. diadema diadema (Hartl.).* Andes of Colombia (Bogota) and Western 



Venezuela (Me'rida).t 



Seven adults (not sexed) from Bogota. Wing 58, 60|, 63-65 ; tail 50, 54, 57-59 ; 



bill ll-12mm. 

 Four adult males from Escorial, Merida. Wing 63|-65; tail 55-59; bill 11|-12| mm. 



() 0. diadema jesupi Allen. Sierra Nevada de Santa Marta, N. Colombia. 

 One female (imm.) from San Lorenzo . Wing 58; tail 49 ; bill 11| mm. 



(c) 0. diadema gratiosa (Scl.), \ Mountains of Ecuador and N.W. Peru (Tambillo). 



Five adult males from Ecuador . . Wing 63-64 ; tail 54-56 ; bill 11-12 mm. 

 Four adult females from Ecuador. . Wing 58-61 ; tail 48-52 ; bill 11-12 mm. 



60. Pogonotriccus alleni Oberholser = P. ophthalmicus Tacz. 



Pogonotriccus ophthalmicus Taczanowski, P. Z. S. Lond. 1874, p. 135 (1874. Amable Maria, 



Central Peru). 



Leptopogon godmani Sclater, P.Z.S. 1887, p. 48 (1887. Sarayagu, Ecuador). 

 Pogonotriccus alleni Oberholser, Proc. U. S. Nat. Mm. xxv. 1902, p. 65 (1903. Rio Cauca, Western 



Colombia). 



In the first part of this paper I have shown Leptopogon godmani to be 

 identical with P. ophthalmicus, and now I am able to state that P. alleni Oberholser 

 is another synonym of the same species. Although this identity has already been 

 mentioned in another connection, \\ a more detailed explanation of the case seems 

 desirable. My conclusions are based upon the following specimens : 



No. 1. Munich Museum, <? ad. Cumbre de 



Valencia, Venezuela, October 2, 1910. S. M. 



Klages coll Wing 60 ; tail 57 ; bill 9| mm. 



No. 2. Carnegie Museum, No. 35,126 <$ ad. 



Cumbre de Valencia, Venezuela, October 13, 



1910. M. A. Carriker coll. . . . Wing 59 ; tail 55 ; bill 10 mm. 



* MyioMus diadema Hartlaub, Rev. Zool. vi. p. 289 (1843. "Nouvelle Grenade," i.e. Bogota). 



f Birds from Merida are practically identical with those from Bogota." 



% Mecoeerculus gratiosus Hclater, P. Z. S. 1862, p. 113 (Ecuador). 



Nov. Zool. xiii. 1906, p. 322-3. 



|| See Hellmajr and Seileru, Arckivf. Naturg. 78, Abt. A, Heft 5, September 1912, p. 77, note 2 t 



