301 



Southern Mexican Avi-Fauna. It is most nearly allied to Formir,- 

 vora tpiixensis of my lately published ' Synopsis of Formicariidte ' 

 (tide antes, p. 241), but may be distinguished by its smaller size, 

 shorter wings, and the small size of the white wing-spots, which in 

 /•'. quixensis are much more prominent. 



48. Muscivora mkxhana, Selater, I'.Z.S. 1856, p. 295. 

 cf, Acatepec, April 1857- 



The crest of this specimen is of a bright blood-red tipped with 

 glancing purple ; but the longer bill at once distinguishes it from the 

 two South American species. The length of the bill from the gape 

 is 1*3, in my example of 3/. regia only TO. 



49. Contopus boreams (Sw.). — Tyrannus borealts, Sw. N. Z. 

 pi. 35. — Tyrannus cooperi, Nuttall. 



d et $, Parada, Oct. 1857- 



This Tyrant is distinguishable by its very long wings, which ex- 

 tend two-thirds of the way down the tail. C. virens, the type of 

 Cabanis's genus Contopus, has also long wings, but is remarkable for 

 its diminutive feet and short tarsi. In this bird the tarsi are pretty 

 strong, and the hind claw rather elongated. 



50. Empidonax bairdi, sp. now 



Supra paUide olivaceus, capite subcristato ; (oris et reyione ocu- 

 luri flari'scentibus: subtus sulphureo-Jtavus, ventre imo satnra- 

 fiore, pectore et lateribus corporis tnagis virescentibus : alts 

 brunnescenti-nigris, tectricum alarium apieibus latis et secun- 

 dariarum marginibus externis ochracescenti-fiuvidis ; Hague 

 aiis bifaseiatis : cauda brunne8centi-nigra t paiUdooUvaeeo extus 

 marginata : rostro superiore nigricantibrunneo, inferiore Jtuvo ; 

 pedibiis nigerrimis. 

 Long, tota 5*3, ala; 3 - 0, caudae 2*6. 



I have been unable to identify this bird with any of the described 

 species of this genus, and accordingly propose to call it after my friend 

 Prof. S. F. Baird of Washington, who is particularly well-acquainted 

 with the group to which it belongs, and has the merit of being the 

 original discoverer of two of the North American species. Were it 

 not for the full information as to the other species which I have derived 

 from the pages of his new Report upon North American Ornithology, 

 I should nave feared to characterize the present bird a< new. 



The Empidonax bairdi may be placed next to the S. fi atnventris , 

 Baird, with which it agrees in the colouring of the lower surface, 

 though perhaps a shade more creamy yellow on the bellv. Above, 



however, it La not of the same full olive, but more rnfescent in tinge ; 

 besides, the lead i- somewhat crested, tin- beak is longer and nar- 

 rower, the general dimensions are larger, and bands on the wings arc 

 bull's yellowish instead of being white or yellowish while. 



."> I . Bm pi donas fulvifrons (Giraud). — Muscicapa fulrifrons, 

 Giraud, I'. of Texas, pi. 2. fig. 2. 



M Salle'g collection contains a single specimen apparently refer- 



