3-0 Mr. 0. Salvin on the Birds of Nicarayua. 



separable. The species is known from Costa Rica, but not so far 

 north as the present specimens indicate. 



Heliothrix barroti (Bourc). 

 Chontales [Belt) . 



Petasophora. delphin^ (Less.). 

 Chontales {Belt) . 



Heliomaster pallidiceps, Gould. 



Salv. P.Z.S. 1867, p. 155. 



Chontales {Belt). 



Though I have hitherto hesitated to unite the Mexican and 

 Guatemalan H. pallidiceps with the southern H. longirostris, the 

 differences between them are so extremely slight that I doubt if 

 the two races can be ultimately maintained as distinct. The 

 paler colouring of the head of the more northern bird probably 

 indicates a tendency towards differentiation rathei' than an es- 

 tablished specific difference. However, the Chontales bird agrees 

 with my Guatemalan examples rather than with others from 

 more southern localities, the colouring of the crown being of 

 precisely the same tint. 



Thaumantias candidus (Bourc. et Muls.). 



Chontales {Belt). 



This species, so common in Guatemala, has not yet been no- 

 ticed in Costa Rica; and this is the most southern locality whence 

 I have seen it. Mr. Belt's collection contains a single example- 



Amazilia RiEPFERi (Bourc). 

 Chontales {Belt). 



Chrysukonia ELICIT (Bouvc. et Muls.). 

 Chontales {Belt). 



Centurus pucherani (Malh.). 

 Chontales {Belt). 



Celeus castaneus (Wagl.). 

 Chontales {Belt). 



MoMOTUs martii, Spix. 



Chontales {Belt). 



Not before noticed north of Costa Rira. 



