13. GEOTHLTPIS. 365 



Geothlypis Philadelphia, /3. macgillivrayi, Coues, B. N.- West, p. 75 



(1874). 

 Geothlypis pliUadelphia macgillivrayi, Coues, Bull, U.S. Geol. Surv. 



iv. p. 568 (1878). 



Adult male. General colour above dark greenish olive, lighter and 

 more clearly olive towards the rump and upper tail-coverts ; lesser 

 and median wing-coverts like the back ; greater series dusky brown, 

 externally olive like the back ; bastard-wing pale brown, lighter 

 externally ; primary-coverts and quills dusky brown, margined with 

 clear olive, the first primary edged with ashy white : tail-feathers 

 oKve, a little lighter on the edges ; head and neck all round dark 

 slaty grey ; the lores, fore part of the cheeks, feathers below the eye, 

 and a shade on the ear-coverts black ; upper and under edge of 

 eyelid wliite ; throat and fore neck dark slaty grev, aU the feathers 

 edged with hoary grey ; the lower throat and fore neck blacker, the 

 feathers being black with hoary margins ; remainder of under sur- 

 fape bright yellow, including the under tail-coverts ; thighs rather 

 pale yellow ; sides of body and flanks greenish olive ; axillaries olive- 

 yellow ; under wing-coverts ashy washed with yellow, the edge of 

 the wing brighter yellow ; quills dusky brown below, ashy along 

 the edge of the inner web : " upper mandible brownish black, its 

 edges in their whole length pale yellowish flesh-colour, as is the 

 lower mandible, which, however, is a little dusky at the end ; feet 

 and claws flesh-coloured ; iris hazel " {Audubon). Total length 

 5 inches, culmen 0-5, wing 2-35, taU 2-15, tarsus 0-8. 



Adult female. Different from the male. Dull olive-brown above, 

 duller brown on the head and neck ; wings and tail as in the male : 

 lores and a ring round the eye isabelline ; a shade of ashy on the 

 sides of the hinder crown ; ear-coverts ashy olive ; throat and chest 

 isabelline brown ; rest of under surface of body bright yellow, the 

 sides olive-greenish with a brownish shade. Total length 4-8 inches, 

 culmen 0*5, wing 2-2, tail 2-1, tarsus 0'8. 



The young males in winter have a grey throat with no black on 

 it or on the lores, but they are still distinguished from G. jpMla- 

 delj^hia by the white eyelid. 



Hah. Middle and Wes..eru provinces of the United States and 

 British Columbia ; east to the limit of arboreal vegetation along 

 the Rocky Mountains ; breeds throughout its United-States range 

 {Coues). Winters in Central America from Mexico to Panama 

 {S. Sf G.). Colombia. 



a. $ ad. sk. 4ytli Pai-allel {G. Datvso7i). N. A. Boundary Com- 



mission [P.]. 

 6. 2ad.sk. Wolf-lake, Indiana, June 1 R.B.Sharpe,Esq. [P.], 



{H. E. Coale). 



c. (S ad. sk. Fort Bridger, Utah. June 4 Salviu-Godmaii Coll. 



{C.Dre.vler). 



d. (S ad. sk. British Columbia. J. K. Lord, Esq. [C], 



e. S ad sk. Cypress Island, .lune. Dr. Lvall [P.]. 



/, (J. cJ $ ad. sk. West side of Rocky Mouu- J. K. Lord, Esq. [P.]. 



taius. 

 h. cJ ad. sk. Qoioxdi^o {Strickland). R.B. Sharpe, Esq. [P.], 



