TYRANNID^E — THE FLYCATCHERS. ;]37 



iires .00 by .7") of an inch. Tlie.se well represent the two extremes. Their 

 averaye is about I inch by .7r> of an inch. 



The eggs of all the nienibei's of tliis genus have a reniari<able similarity, 

 and can scarcely be mistaken for those of any other group. 



Mjriarchus crinitus, var. cinerascens, L.vwu. 



A8H-THB0ATES FLTCATCH£B. 



Tyrannula cinerascens, Lawiienik, Aim. X. Y. Lye. N. Hist. V, Si'pt. 18.')1, 109. Mi/- 

 iui'chus ciueniscnis, .Si'L. List, lS(i2, 133. — In. 1'. Z. S. IftTl, m. — L'oL'Ks, I'r. .\. 

 N. ti. July, 187-, OU. MyUirchus mcj-icunus, \i.\lKU, liinls X. Am. ISuSS, 17'J, pi. 5. 

 — Hkkiim. X, S, 37, pi. V. — Cooi'Kli, Orti. C'ul. I, 1870, 310. Mi/iiirchiis iiuxiatiuis, 

 var. pcrliiwj; I!.vii!i), V. A. N. S. 1859, 303 (C'lipu Si. Luius). 



Sp. Ciiau. Bill bluck, the width upposito thi^ nostrils not half tho length of eiilnieii. 

 Head crested. Tiiil even, the lateral feathers slightly shorter. Second, third, and fourth 

 quills longest; first rather shorter tii.in the seveiitii. Above dull grayish-olive; the 

 centres of the feathers rather darker ; the crown, rump, and ujjper tail-coverts tinged 

 with brownish. Tho forehead and sides of the head and neck grayish-ash ; the chin, 

 throat, and forepart of the breast asliy-wiiite; the middle of the breast white; the rest 

 of the under parts very pale snl[)hur-yellov>' ; wings and tail brown. Two l)ands across 

 the wing, with outer edges of .leeondaries and tertials, dull white ; the outer edges of the 

 primaries light chestnut-brown (i-.xcept towards the tip and on the outer feather) ; the 

 inner edges tinged with the same. Whole of middle tad-ti-athers, with the outer webs 

 (only) and the ends of the others brown ; tho rest of the inner webs reddish-chestnut, 

 the outer web of exterior leather yellowi ii-white. Legs and bill black ; lower mandible 

 brownish at the l)ase. Length about 8.00 ; wing, 4.00 ; tail, 4.10; tarsus, .90. 



Hah. Coast of California, to Cape St. Lucas, and across by the valley of Gila anil Rio 

 Gr.inde to Xortheastern Mexico. Seen as far north in Texas as San Antonio. Oaxaca 

 (Set,. 18o9, 384) ; ? Guatemala (Sci,. Ibi.s, I, 129) ; Vera Cruz hot regions, resident (Su.m. 

 M. I5ost. Soc. I) ; San Antonio, Texas (DuiiSSEn, Ibis, 18G5, 473). 



In a young .specimen the crown is more tinged witli brown; the upper 

 tail-coverts and the middle tail-feathers are chestnut, and, in fact, all the 

 tail-feathers are of this color, except along Ijoth sides of the shaft on the 

 central feathers, and along its outer side in the lateral ones. 



This species is easily distinguished from T. crinHits and T. coopvri by 

 the Ijrown tip of the tail ; the colors paler than in the former, bill slenderer, 

 and tarsi longer. 



A variety of this sjiecies {pcrtinox'^) is found at Cape St. Lucas, and dis- 

 tinguished chiefly by the considerably larger and stouter bill. 



Habits. The Ash-throated or Mexican Flycatcher ap])ears to be a com- 

 mon species, from 8an Antonio, Texas, its extreme northeastern point, south- 

 westerly throughout Mexico fis far south as Guatemala, and westward to 

 the Pacific coast. It has been obtained in various parts of California 

 by Mr. Cutts, Mr. Schott, Dr. Heennann, and others, as also on the Gila 



' Mjliarchits m^ucicutiux, var. per/hiii.i; nAiiit), Pr. Phil. .\i!rtd. 18.59, 303. 

 VOL. II. 43 



