592 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



EMPIDONAX FULVIFRONS FUSCICEPS Nelson. 

 COMITAN FLYCATCHER. 



Similar to E. f. ruhicundus, but with pileiim and hindneck dusky- 

 grayish, sooty grayish, or grayish sepia, in more or less strong contrast 

 with olive-brown of back, etc. 



Adult male. — Length (skin), 117; ^ving, 63; tail, 53.5; exposed cul- 

 men, 10.5; tarsus, 14.5; middle toe, 7.5.'* 



Adult female. — Length (skins) , 1 14-115.5 (115); wing, 58 ; tail, 46-48 

 (47); exposed culmen, 10.5; tarsus, 14-14.5 (14.2); middle toe, 8-8.5 

 (8.2)." 



State of Chiapas, southern Mexico (Comitan; Teopisca; Tenejapa). 



? Mitrephorus fulvifrons ScLAXERand Salvin, Ibis, 1860, 275 (Duefias, Guatemala). 



? [Empidonax] fulvifrons Sclater and Salvin, Nom. Av. Neot., 1873, 52, part. 



? Empidonax fulvifrons ScLAT-En, Cat. Birds Brit. Mus., xiv, 1888, 222, part(Quezal- 

 tenango and Duefias, Guatemala). — Salvin and Godman, Biol. Centr.-Am., 

 Aves, ii, 1889, 69, part (Quezaltenango and Duefias, Guatemala). 



Empidonax fulvifrons fusciceps Nelson, Proc. Biol. Soc, xvii, Oct. 6, 1904, 152 

 (Comitan, Chiapas; coll. U. S. Nat. Mus.). 



Genus SAYORNIS Bonaparte. 



Sayornis Bonaparte, Ann. Sci. Nat., sdr. 4, Zool., i, 1854, 133; Not. Orn. Coll. 



Delattre, 1854, 87. (Type, Tyrannula nigricans Swainson.) 

 Sayiornis (emendation) Coues, Check List, 2d ed., 1882, 69. 

 Aulanax Cabanis, Journ. fiir Orn., 1856, 2. (Type, Tyrannula nigricans Swain- 

 son.) 

 Aulonax (emendation) Sundevall, Met. Nat. Av. Disp. Tent., 1872, 59. 

 Thermomyias c Cabanis and Heine, Mus. Hein., ii, Oct., 1859, 68. (Type, Mus- 



cicapa saya Bonaparte.) 

 Empidiasd Cabanis and Heine, Mus. Hein., ii, Oct., 1859, 69. (Type, Muscicapa 



fusca Gmelin, =M. phtKhe Latham.) 



Medium-sized Tyi-amiidse (wing about 80-110 mm.) with exposed 

 culmen decidedly shorter than middle toe with claw, bill narrow (its 

 width at frontal antise equal to less than half the length of exposed 

 culmen and much less than twice its width at same point), not con- 

 stricted terminally in vertical profile, and with coloration plain gray- 

 ish brown or dusky above, darker (sometimes blackish) on pileum, 

 the wings dusky with paler(sometimes white and conspicuous) edgings, 

 the under parts whitish, blackish with whitisli abdomen, or light 

 grayish brown anteriorly, passing into cinnamon-buff posteriorly. 



Bill much shorter than head, narrow and moderately depressed 

 basally, its width at frontal antise equal to less than half the length 

 of exposed culmen and much less than twice its depth at same point, 



« One specimen (the type). 



b Two specimens. 



c"Von ^r}Z,doD (jagen) und /.ivia? (Fliegenfaiiger.)" 



d"Yon 'EfiTtii (Miicke) wie juviai von /^via gebildet." 



