Nelson New Birds from Southern Mexico. 153 



with the duller mummy brown of typical 8. occidentale; the suffusion of 

 yellowish-buffy, so marked in the latter, mainly absent or much reduced 

 in present form; face dingy gray with scarcely a trace of buffy; legs. 

 feet and toes whiter and more thickly spotted with brown; size about as 

 in S. occidentale. 



Dimensions of type. Wing, 330; tail, 214; culmen, 35; tarsus, 63. 



Remarks. This form is based on a single specimen, but the National 

 Museum has received another from the State of Guanajuato, Mexico, 

 which is not at present accessible. 



The shade of brown of 8. o. lucidum approaches more nearly to that of 

 8. o. caurinum than to that of typical occidental*, yet owing to the greater 

 intensity of the buffy suffusion and the small size of the white spots on 

 both upper and under parts of 8. o. caurinum it is much more distinct 

 from lucidum than is occidentale. The white spots throughout in S. o. 

 lucidum average about twice as large as those in 8. o. caurinum; while 

 the gray face and general suppression of buffy in the Mexican bird show 

 strongly on comparison with caurinum. 



Xiphocolaptes emigrans omiltemensis, subsp. nov. 

 Omilteme Wood-hewer. 



Type. No. 185,530, $ ad., U. S. Nat. Mus., Biological Survey Coll. 

 From Omilteme, Guerrero, Mexico. Collected May 19, 1903, by E. W. 

 Nelson and E. A. Goldman. 



Distribution. Oak forests on south slope of the Sierra Madre of central 

 Guerrero, near Omilteme (above 6,000 feet).. 



Subxpecific characters. Most like X. emigrans sclateri from which it 

 differs in the duller, dingier shades of brown above and below, lacking 

 most of the yellowish mixture so conspicuous in sclateri white throat 

 patch smaller, and white shaft lines on neck and breast narrower, fewer 

 and more obsolescent posteriorly; white on throat and shaft streaks on 

 upper and lower parts dingier white than in sclateri and less sharply 

 contrasted with other colors. Size about as in sclateri, including length 

 and proportions of bill. 



Remarks. The authors of the "Biologia" (Vol. II, pp. 183-184), have 

 treated Xiphocolaptes sclateri as a synonym of X. emigrans. With eight 

 specimens of the latter before me, two specimens (including type) of 

 sclateri and four of omiltemensis, the specimens of seiateri may at once be 

 distinguished from the series of emigrans by their longer and more slender 

 bills, they also have the whitish area on the chin and throat less 

 streaked, while the whitish shaft streaks on crown and breast are rather 

 broader and more strongly marked. 



