EMPWOyAX. 343 



measui-emcnts about as in male. Nest deep 

 cup-shaped, bulk}-, usuall}- built between forks 

 of an upright twig or branch, in bushes, com- 

 posed of plant-down, straws, etc. Eggs 2.-A, 

 .70 X -53, similar in color to those of E. aca- 

 dicus, but averaging paler, both in ground- 

 color and in markings. Hub. Western North 

 America, north to Sitka and Fort Simpson ; 

 south, in winter, into Jlexico. 



466. E. traillii (Aud.). Traill's Flycatcher.' 

 hr. Similar to E. pusillus, but avLi-aging more de- 

 cidedly olivaceous above and more distinctly 

 tino-ed with yellow beneath, the bill shorter 

 and broader, and tarsus shorter. Male : Wing 

 2.60-3.00 (2.81), tail 2.40-2.60 (2.48), culmen 

 .60-.64 (.62), bill from nostril .32-37 (.34), 

 •width at base .29-.30 (.30), tarsus .64-.67 (.66). 

 Female: Wing 2.50-2.65 (2.58), tail 2.25-2.35 

 (2.30). Nest and eggs as in E. pusillus, the 

 latter averaging .73 X -53. Hab. Eastern 

 Xorth America ; south, in winter, through 

 Middle America to northern South America. 



466(7. E. traillii alnorum Brewst. 

 Alder Flycatcher.' 

 g''. Tail slightly, but decidedly, emarginated ; wing av- 

 eraging less than 2.60. (Length 4.90-5 50.) 



Ilardly distinguishable in color from E. pusillus 

 and E. traillii, but wing-bands usually whiter. 

 Male: Wing 2.30-2.60 (2.49), tair2.10-2.40 

 (2.30). culmen .53-.59 (.56), bill from nostril 

 .27-.31 (.29), width at base .23-.27 (.25), 

 tarsus .59-.68 (.65). Female : Wing 2.20-2.40 

 (2.33), tail 2.10-2.25 (2.18). Nest very com- 

 pactly felted, cup-shaped, composed chieflv of 

 grayish plant-fibres, placed in fork of upright 

 branches of bushes or small trees. Eggs 2—4, 

 .64 X .50, plain butfy white. Hab. Eastern 

 iNorth America, breeding from northern 

 United States northward ; south, in winter, 

 through 3Iiddle America, to Panama. 



467. E. minimus Baird. Least Flycatcher. 

 b'. Width of bill at nostrils less than half the exposed culmen. 



c". Outer web of outer tail-feather not abruptly paler than inner web; 

 culmen .55, or less ; tarsus less than .70, (Length 5.25-5.75.) 



' Cy. llBEWSTER, The Auk, xii. April, 1S9J, pp. 169-ICl, > Ibid., pp. 161-163. 



