BIRDS OF NORTH AND MIDDLE AMERICA. 



169 



SCLERURUS GUATEMALENSIS (Hartlaub). 



GUATEMALAN SCLERTJRUS. 



Adults (sexes alike). — Above plain deep Vandyke brown, the 

 feathers of pileum very indistinctly margined with dusky; tail darker 

 brown, passing into blackish brown terminally; chin and throat 

 white, the feathers broadly margined with dusky (at least on lower 

 throat), producing a squamate effect; rest of under parts bister or 

 sepia brown, brighter, more tawnj^, brown on chest, where the 

 feathers are paler centrally and have a narrow shaft-streak of light 

 tawny; under wing-coverts pale brownish gray or grayish brown, 

 narrowly margined with dusky; bill black or blackish brown, the 

 basal portion dull whitish or yellowish (in dried skins); iris brown; 

 legs and feet dusky horn color to brownish black (in dried sldns). 



Young. — Essentially like adults but chin and throat darker, 

 streaked rather than squamated with dusky and with ground color 

 pale brown or brownish gray instead of white, and color of chest 

 less tawny (nearly mummy brown). 



Adult ?no7e.— Length (skins), 150-181 (164); wing, 85.5-92 (88.7); 

 tail, 57-66.5 (60.9); culmen, 21-25 (22.7); tarsus, 20.5-23 (22); 

 middle toe, 17-19.5 (18.2).« 



Adult fe7nale.— Length (skins), 148-165 (157); wing, 83-91 (86.9); 

 tail, 54.5-59.5 (57.6); culmen, 21.5-23.5 (22.4); tarsus, 21-23 (21.9); 

 middle toe, 18-19.5 (18.3).^ 



« Eighteen specimens. 



b Ten specimens. 



Locality. 



MALES. 



One adult male from Tabasco, Mexico . . . 



Three adult males from Honduras 



Two adult males from British Honduras. 



One adult male from Nicaragua 



Ten adult males from Costa Rica 



One adult male from PanamA 



FEMALES. 



One adult female from Guatemala 



One adult female from Honduras 



One adult female from British Honduras 



Five adult females from Costa Rica 



Two adult females from Panamd, 



Wing. 



89.7 

 90.5 



86.5 

 89.5 

 91 



Sli. 9 

 84 



Middle 

 toe. 



18.5 



18.7 



18.2 



18 



18 



18 



18 



18.5 



19 



18.5 



18.2 



