70 TYRANNIDZ. 
b’. Sudtus aut albidus aut via flavicans. 
a”. Supra umbrino-brunneus. 
2. Empidonax albigularis. (Tab. XL. fig. 2.) 
Empidonaz albigularis, Scl. & Salv. Ibis, 1859, p. 1227; P. Z. S. 1864, p. 360°; Salv. Ibis, 1874,. 
p. 309°; Ridgw. Ibis, 1886, p. 463°; Man. N. Am. B. p. 340°; Scl. Cat. Birds Brit. Mus. 
xiv. p. 223°. 
Empidonaz axillaris, Ridgw. in Baird, Brew., & Ridgw. N. Am. B. ii. p. 363 7, 
Supra sordide olivaceo-brunneus; uropygio rufescente tincto; gutture albo; pectore et cervicis lateribus 
grisescenti-brunneis ; ventre et crisso pallide flavis; alis et cauda fusco-nigricantibus, illis pallide brunneo- 
bifasciatis, secundariis extus albido anguste limbatis; subalaribus ochraceis: rostri maxilla fusca, mandi- 
bula pallida; pedibus nigricantibus. Long. tota 4°75, ale 2:3, caude 2-1, tarsi 0-6, rostri a rictu 0-6. 
(Descr. maris ex Duefias, Guatemala. Mus. nostr.) 
Hab. Mexico, Acapulco and Dos Arroyos in Guerrero (Mrs. H. H. Smith), Huipulco 
(Ferrari-Perez), Orizaba (Botteri*), Jalapa (I. Trujillo); Guaremata, Dueiias. 
(0. 8.1, L. Fraser), Coban (0. S. & F. D. G.); Pawama (Mf*Leannan *). 
This species was discovered by Salvin during his first expedition to Guatemala in 
1858, when he obtained a single example near Duefias at an elevation of about 5000: 
feet above the sea. Other specimens were subsequently secured at the same place, and 
also at Coban, but the bird is nowhere abundant. 
Its northern range reaches to the Mexican State of Vera Cruz, whence specimens 
have been sent from several places, and also from the neighbourhood of the city of 
Mexico. 
Southward we have no trace of it until we come to the Isthmus of Panama, where its. 
presence is attested by a single specimen procured by the late James M‘Leannan near 
Lion Hill Station. 
b". Supra olivascens aut cinerascens. 
3. Empidonax acadicus. 
Muscicapa acadica, Gm. Syst. Nat. i. p. 947’. 
Empidonaz acadicus, Dresser, Ibis, 1865, p. 475°; Baird, Brew., & Ridgw. N. Am. B. ii. p. 874° ;. 
Sennett, Bull. U. S. Geol. Surv. v. p. 405*; Coues, Birds N. W. p. 249°; Key N. Am. B. 
ed. 2, p. 441°; Ridgw. Ibis, 1886, p. 4657; Man. N. Am. B. p. 842°; Scl. Cat. Birds Brit. 
Mus. xiv. p. 228°. 
Empidonaz bairdi, Lawr. Ann. Lyc. N. Y. vii. p. 827 (nec Scl.) ”. 
Empidonaz griseigularis, Lawr. Ann. Lyc. N. Y. vii. p. 471”. 
Supra olivaceus; alis nigricantibus, tectricibus fulvo-albido late terminatis, fasciis duabus formantibus ; secun- 
dariis extrorsum pallide olivaceo limbatis; cauda nigricanti-olivaceo vix limbata: subtus albus; pectore 
griseo; hypochondriis olivaceo lavatis; subalaribus pallide fulvis: rostri maxilla nigricante, mandibula 
pallida; pedibus obscure corylinis. Long. tota 5:0, alee 2°7, caude: 2°2, tarsi 0°5, rostria rictuQ°6. (Descr. 
exempl, ex Insula Ruatan, Honduras. Mus. nostr.) 
Hab. Nortn America, Middle and Eastern States—Mexico, Yucatan; Honpvras,. 
