84 TYRANNIDZ. 
This is a southern form of 7. 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 Rica 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 1, states that 
this bird is allied to Z. chrysops, but its alliance is certainly with TZ. vilissimus. 
T. chrysops, besides having the head almost the same colour as the back, has, as its 
name implies, the forehead yellow. 
ELAINEA. 
Elenea, 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 Elatnea 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 lainea arenarum is best 
placed in the genus Sublegatus, being, in fact, identical with Z# glaber, the type of 
Sublegatus ! 
Llainea, then, according to our views, contains only the first portion of Mr. Sclater’s 
first section and part of the second; we remove from Llainea altogether the small 
bright-crested species forming sections 6 and ¢ of his key. 
This leaves only the /. 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 Haine (£. 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 Tyrannide, 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. 18, t. 16. f. 17. 
Elainea pagana, Scl. Cat. Birds Brit. Mus. xiv. p. 187°. 
Elainea subpagana, Scl. & Salv. Ibis, 1860, p. 36°; P. Z. S. 1864, p. 359°, 1870, p. 887°; Cab. 
J.f, Orn. 1861, p. 2447; Scl. P. Z. S. 1862, p. 869°; Lawr. Ann. Lyc. N.Y. vu. p. 828’, 
