34 TTEANNID^. 



This is a southern form of T. vilissimus of Guatemala, differing in its smaller size 

 and paler under surface, which is a very pale grey, with the flanks and crissum alone 

 olive-coloured. These differences are not very trenchant, but they seem to be associated 

 with a distinct region, the mountain-system of Costa Eica and Panama. We have 

 received many specimens from the State of Panama, where this bird would appear to 

 be quite common. 



Mr. Sclater, in a note appended to Mr. Lawrence's original description i, states that 

 this bird is allied to T. chrysops, but its alliance is certainly with T. vilissimus. 

 T. chrysops, besides having the head almost the same colour as the back, has, as its 

 name implies, the forehead yellow. 



ELAINEA. 



Elmnea, Sundevall, K. "Vet.-Ak. Handl. 1835, p. 89 (type Muscicapa pagana, Licht.). 

 Elainea, Scl. Cat. Birds Brit. Mus. xiv. p. 136 (partim). 



Upon close examination of the species included in Elainea by Mr. Sclater, we find 

 that they belong to two different groups, easily separated by the form of the nostril as 

 described below. Moreover, that the somewhat peculiar Elainea arenarum is best 

 placed in the genus Suhlegattis, being, in fact, identical with E. glaber, the type of 

 Suhlegatus ! 



Elainea, then, according to our views, contains only the first portion of Mr. Sclater's 

 first section and part of the second ; we remove from Elainea altogether the small 

 bright-crested species forming sections b and c of his key. 



This leaves only the E. pagana section to deal with, of which three species occur 

 within our limits, none of them being peculiar, but also found in South America or 

 the Antilles. 



In the structure of the bill Elainea {E. pagana) is similar to that of the preceding 

 genera, but is rather wider in comparison with its length and not so compressed ; the 

 nostrils are surrounded by membrane, the rictal bristles moderately developed'; the 

 wings offer no peculiarity, being comparatively short and rounded as in most non- 

 migratory Tyrannidse, the outermost primary =7th; the tail is nearly square, a little 

 <wing, =4 tarsus. 



1. Elainea pagana. 



Muscicapa pagana, Licht. Verz. Doubl. p. 54 \ 

 Platyrhynchus paganus, Spix, Av. Bras. ii. p. 13, t. 16. f. 1 *. 

 Elainea pagana, Scl. Cat. Birds Brit. Mus. xiv. p. 137'. 



Elainea subpagana, Scl. & Salv. Ibis, 1860, p. 36*; P. Z. S. 1864, p. 359", 1870, p. 837°; Cab. 

 J. f. Om. 1861, p. 244 ' ; Scl. P. Z. S. 1862, p. 869 ' ; Laivr. Ami. Lye. N. Y. vii. p. 328 % 



