TYUANNID.E — THE FLYCATCHERS. 365 



E. griseipectuB.' Colors of hnmmondi, but wiiijf-baiitls whiter and 

 narrowfi-, very sharply ileliuod; sides tinged with clear greenish; 

 jugiilinn and sides of throat elear ashy. Wing, 1!.40 ; tail, 2.40 ; bill, 

 .56 and .27 ; tarsus, .00; middle toe, .35. Huh. (iiiayaciuil, Ecuador. 



IT. 71/(7 nijiinre, or sUyldly rounded ; feathers ue.iite at lips. 

 B. puBilluB. Urownish-olivc or olive-gray above, wing-bands olive 

 or gray ; beneath whitish, with a grayish shade across tiie breast, and 

 a sulphur-yellow tinge posteriorly. 



(Mive-grayisli above, wing-bands inueh lighter, or whitish-gray. 

 Wing, 2.1)0; tail, 2.70; bill, .09 and .20; tarsus, .07; middle toe, 

 .40. Hub. Western Provinci! of North America, and Middle 



and Western Mexico var piisillus. 



Brownish-olive above, wing-bands but little ligliter. Wing, 2.tt0 ; 

 tail, 2.r)0; bill, .04 and .27 ; tarsus, .00; middle toe, .38. Hub. 

 Eastern Province of North America, and Eastern Mexico . var. trailli. 



§. Young with )ij)jier plumar/e tmnsversehj mottled. Wing-bands with a 



pale liiiff tinge; upper muudihie brown. 

 B. acadicuB. Grayish-green above, greenish-white beneath ; throat 

 purer white. Wing, 3.10; tail, 2.80; bill, .07 and .30; tarsus, .60; 

 middle loe, .34. Ilab. Eastern Province of United States, and Eastern 

 Mexico .......... \ar. u cadicns. 



Wing, 2.0"}; tail, 2.50; bill, .00 and .30; tarsus, .62; middle toe, 

 .33. Wing-bands whiter. Ilnb. Panama . var. gr i.ieigular is .'' 



In Em,ndona.v, a.s well a.s Contopus, autumnal birds have the phunaye 

 softer and the colors brighter than in sjjring; the lirilliancy of the yellow 

 shades is especially enhanced. The young of the year resemble the parents, 

 but there is a greater tendency to light bands on the wings, which with the 

 other markings of this region show an ochraceous tinge. The lower mandi- 

 ble is also usually tinged with dusky. In the young of E. acadica, alone, 

 there are light transverse bars over ui)]ier surface, as in the young of some 

 species of Contopus (C. hahamaisis and C. puncnsl^i). 



1 Empidonax grise.ijKdn.t, liAWit. J[ay possibly be niiothor seasonal plumage of tlie same 

 species as pcctorulis, but dillers in some seemingly important resiiects. 



^ Emjiidonax uatdicus, var. griscinu/itris. Empidonax griiciijubtris, Lawu. Dill'ering from 

 aciuUcus only in smaller size and whiter wing-bands. 



The remaining described American species of Empidonax, which we havi; not seen, are the 

 following : — 



Empidonax magniroslrix, GouLn, Voy. Beagle, pi. 8. — Gr.AY, Hand List. 



Empidonax albiguhvis, Sci.ATEn & Sai.vix, Ibis, 18.">9, p. 122 (OrizabiiV — Sn.ATER, Catal. 

 Am. B. 1862, 221). This may possibly be the species described above as E. axiUarid. 



