TYIUNNID.K — THE KLYCATOllERS. 3G8 



There are few sjjecies of Xortli Anievicaii birds more diHicult to distiii- 

 giiisli tluiu the small Flycatchers, the characters, though constant, beiuy very 

 slight and almost inai^jrecialile, except to a very acute observer. 



The following synopsis may aid in distinguishing the species : — 



Species and Varieties. 



Aa Iiiiior \V('1)s of sui'diuIiu'Il'S t'dgiHl Willi iiiiiki.sh-liiill'. 



a. Olivi'-ln'owii iiliovt', whitisli lic'iiL'iuli ; liliiiu ocliriU'Oons. 



E. bruiiueus.' Tliiid ([iiili li)iii;\'st, liist L'(|Uiil to s(!vl'1iI1i ; tail slightly 

 rouiKli'il. liutisot-olivc ubovc, tlio crown, winjrs, iiiiil tail wiili u rud- 

 disli-browii lingo; a yellowisli-gray sliadu across the Ijiisisl, and a I'aint 

 siili>lun-y('llow lingo to posterior lower parts. Wing-liands broad, 

 ghai-piy dclined, dcop oohraecons ; lining of wing and tiliiai slightly 

 tinged with the .same. Wing, 2.:i.") ; tail, 'J..'M ; bill, ..J7 ami .'27; tarsus, 

 .5n ; iniildle toe, .:i;!. l/ab. Paiaiia. 



E. axillaria.' Third (piill longest, lirst eipial to sevcnith ; tail ? Daik 

 gi'ayish-liidwn above, nearly unil'oi'ni, lueast oehraeeons-olive; a just 

 appreciable tinge of s;id[>lnn-yellow on abdonien. Wing-bands narrow, 

 badly defined, in color nearly like llut back ; lining of the wing and 

 tibial very deep ochraceons. \V"ing, 2.40; tail, 2..")0; bill, .GO and .30; 

 tarsns, .00; middle toe, .Hi. ir,M!. (Jri/alia. 



b. 01iv<'-grt'en above, y^'llow beneath ; liliiai gi'ceiiish. 



Zj. flavescens.^ Tiiird, or third and fourlh tpiills longest ; first oipial to 

 eighth. Tail ilecidedly emarginaled. Intense greenish-olive above, the 

 crown with a decided rii.sset tinge; beneath bright lenion-yellow, with 

 a shade of fulvon.s-brown across the breast. Wing, 2.'.i') to 'J. 70 ; tail, 

 2.20 to 2.40; bill, .;j!) and ..'JO ; tar.sii.s, .(iO; middle toe, .;>"), /I<tli. Co.sta 

 Riea. 



E. bairdi.* Fourth qiiill longest, fn'st.^horter than eighth. Tail slightly 

 emarginated. Dull greenish-olive above, nearly imiforni ; beneath 

 clear .sulphur-yellow, with a green isli-olive shade across the breast. 

 Wing, 2.00; tail, 2.50; bill, .02 and .21); tar.su.s, .0.") ; middle toe, .35. 

 J/<ih. Eastern Mexico (Mnt.Mioi!). 

 B> Inner webs of secondaries edged with yellowish or grayish white. 

 a. Olive-green above, yellowi.sh licnealh. 



§. Vtiiiiiij not motlird ahuve. 



E. flaviventris. Bill broad, twice as wide as deep, and the cnlincn 

 less than twice the breadth. Outer web of lateral tail-feather dusky, 

 like the imiei-. Wing-bands narrow, wliitish. Tail s(|iiare. 



Clear olive-green above, siilpliur-ycUow lieneath ; wing-bands 

 sulphur-yellowish ; lining of wing clear .<;iilphui'y-ycllow. Wing, 



1 Empulomu: bruniicus, IIidowav. A very distinct species, not needing ooniparison with any 

 othiT. 



* Empidmmx axilhiris, I!iiw;wav. 



' Eiii/)ii/t)iiii.r iliircscciis, L.vwii. .\biy lie tlie soiitheni form of luiinli, but (liller in .some ap- 

 parently I'ssi'iitial features. 



* Empuhmn.!- hainii, Sci.ATi'.i!, 1\ Z. S. ]Sri8, ;!01 ; Ibis, IS.^iO, 4-1-2 : C.ital. Am. R. 1802, 

 230. — Sci-ATKU & Halvi.s, Ibis, ISOU, 'M. UIhIi. Cordova, Coban, JIazatlaii, Mimdor, etc.) 



