coccvzvs. 273 



o\ Willi; loss than 6.00, tail less than 11.00; throat and ohost phiin buff or buffr 

 whitish ; above metallic bronzy brown, becoming blue-black anteriorly, 

 each feather broadly edged with whitish; bcneatli huffy whitish or buff, 

 including throat, fore-neck, and chest, the sides of the latter streaked with 

 black; two middle tail-feathers bronzy brown, the rest metallic greenish, 

 broadl}- tipped with white; wing about 5.50, tail about 10.30. Hab. Guate- 

 mala and southern Mexico, north to Yucatan, Vera Cruz, and Mazatlan. 



G. affinis IIaktl. Mexican Road-runner.' 



Gents COCCYZUS Yieillot. (Page 272, pi. LXXX., fig. 1.) 



Species. 



Common Cn.\RACTERs. — Above plain brownish gray or grayish brown, with 

 more or less of a faint bronzy lustre, the color usually becoming more grayish on 

 head, on side of which (over ear-coverts) is a darker stripe ; lower parts plain 

 whitish, buffy, or ochraecous ; tail-feathers (except middle pair) more or less dis- 

 tinctlj- tipped with whitish. Kest a slight flat structure of sticks, etc., usually on 

 small trees or lower branches of larger trees. 



a". Basal half, or more, of lower mandible yellow ; adult with tail-feathers (except 

 middle pair) black, broadly and abruptly tipped with white; yonng with tail- 

 feathers grayish dusky, broadly, but not sharplj-, tipped with dull white. 

 6'. Inner webs of quills chiefly rufous, the outer webs more or less tinijed with 

 same toward base ; lower parts white tinged with pale ashy on fore-neck, 

 chest, and thighs. 

 c". Smaller, with proportionally smaller and weaker bill; length 11.00- 

 12.70, wing 5.40-5.80 (5.61), tail 6.00-6.15 (6.07), exposed culmen 

 ,97-1.01 (.99), depth of bill at base .32-.3-t (.33). i:ggs 2-5, 1.19 X 

 .90, dull pale glaucous-green or glaucous-white. Hab. Eastern North 

 America, north to New Brunswick, Canada, etc., west to the Great 

 Plains, Bouth, in winter, to Wist Indies, eastern Mexico, and Costa 



Eica 387. C. americanus (Lin.n.). Yellow-billed Cuckoo. 



c*. Larger, with proportionally larger and stouter bill ; length 12.30-13.50, 

 wing 5.50-6.00 (5.84), tail 6^10-6.90 (6.59), culmen 1.02-1,08 (1.05), 

 depth of bill through base .37-,40 (.39). Hab. Western United States, 

 north to Oregon, east to western Texas and Colorado, south over 

 table-lands of Mexico; Lower California. 



3S7a. C. americanus occidentalis Eipgw. Californian Cnckoo.' 

 i'. Quills without nifbus on either web ; lower parts buffy or ochraceous, paler 

 anteriorly, 

 c". Larger, with lower parts much more deeply colored ; lower parts deep 



' Geocoeeyx affintt Hartlaib, Rev. Zool. 1844, 215, 

 • New subspecies. 



36 



