172 MNIOTILTIDiE. 



regions of Southern Mexico, where it has been noticed by many collectors from Deppe 

 to the present time. In Guatemala it is also an inhabitant of the temperate forests of 

 both coasts, being abundant in the Volcan de Fuego as high as 6500 feet, and in Vera 

 Paz between 4500 and 1500 feet. We always found it in humid forest searching for 

 its food amongst the leaves, twigs, and bark of the stems of the trees, its habits being 

 much like those of the Mniotiltidse in general. It does not occur beyoiid the spurs of 

 the higher mountains of the State of Panama, being absent from the line of railway, 

 and its place taken by allied species in the southern continent. 



As indicated above, southern specimens are more olivaceous on the back, and have 

 the middle of the vertex deeper orange. These diflferences have already been noticed 

 by Prof. Baird *, who suggests that they may be merely seasonal, adding at the same 

 time that they indicate a closer relationship between B. culicivorus and B. bivittatus than 

 usually admitted, and that these birds may ultimately be referred to that species. The 

 absence of the distinct dark mark behind the eye separates the former from B. bivittatus ; 

 and it only remains to consider the relationship of the two Central-American races of 

 B. culicivorus, the Mexican and Guatemalan and the Costa-Eican and Veraguan. The 

 distinctions alluded to are of no great amount, and, moreover, not quite constant, 

 inasmuch as the colour of the crown in Guatemalan examples varies from yellow to 

 orange, apparently without reference to sex, and it is only the average colour of southern 

 specimens that is deeper orange. The colour of the upper surface of Costa-Eica examples 

 is hardly sufficiently different to justify their bearing a distinct name. 



In his note on Giraud's ' Birds of Texas,' Mr. Sclater, while recognizing the identity 

 of Muscicapa hrasieri of Giraud, and Sylvia culicivora, Licht., says that the bird should 

 be called Basileuterus brasieri (Giraud) ; and it thus passed for several years. In giving 

 this decision, however, he overlooked Lichtenstein's short but recognizable description 

 of his S. culicivora ^, published in 1830, the latter name having some ten years' priority. 



b. Pileus obscurus inornatus, supercilium fulvum. 



3. BasHeuterus leucopygius. 



Basileuterus leucopygius, Scl. & Salv. Nomencl. Av. Neotr. p. 156*. 



Basileuterus semicervinus, Lawr. Ann. Lye. N. Y. vii. p. 323 ' (nee Sclater) . 



Balileuterus uropygialis, Scl. & Salv. P. Z. S. 1864, p. 347°; Baird, Rev. Am. B. i. p. 246*; Lawr. 



Ann. Lye. N.Y. viii. p. 180"; ix. p. 95°; Salv. P. Z. S. 1867, p. 136'; 1870, p. 183'; 



Ibis, 1872, p. 313' (nee Selater). 



Saturate fuscescenti-olivaoeus, pileo, alls et caudse apioe nigrioantibus ; alarum marginibus dorso concoloribus • 

 subtus medialiter albidus viz cervino lavatus, pectore et hypoehondriis fusco perfusis ; uropygio et caud% 

 dimidio antico cervino-albidis ; rostro corneo, pedibus corylinis. Long, tota 5'2, alse 2*25 caudse 2-8 

 rostri a rictu 0"6, tarsi 0*9. (Desor. maris ex Santa Fe, Panama. Mus. nostr.) 



Hob. Nicaragua, Greytown (iroZZa?i(Z 5 8) . Costa Kica (Carm^■o^), Tucurriqui (^rc(^ ''j^ 

 Angostura and Juiz (Carmio^^), PA?rAMA,Bugaba^ Santa Fe^ {ArcS), line of railway 

 ( Galbraith ^, M^Leannan ^). 



