V0 1889"'] PROCEEDINGS OF THE NATIONAL MUSEUM. 9 



chestnut; lower back, rump, and upper tail-coverts bright reddish 

 chestnut; tail clear chestnut, with shafts becoming blackish basally. 

 Sides of head streaked with dark bistre and light dull buffy, the latter 

 prevailing on orbital region arid ear-coverts, the former on malar region; 

 chin and upper throat plain pale grayish buffy, the lower throat similar 

 but indistinctly spotted or mottled with brownish ; sides of neck, chest, 

 and under parts generally, raw-umber, more rufescent on sides and lower 

 tail-coverts; sides of neck narrowly streaked with pale brownish buffy; 

 chest and upper breast broadly streaked with a paler and duller tint of 

 the same, each streak margined laterally by a narrower dusky streak; 

 lower breast and belly with similar but much narrower and less distinct 

 streaks, the middle and lower portion of the latter marked with small 

 transverse spots of dusky, in transverse series, but not forming continu- 

 ous bars; under tail-coverts very indistinctly streaked with paler and 

 faintly spotted with dusky. Bill horn-color, feet dusky, "iris dark." 

 Length (skin), 11.75; wing, 5.50; tail, 5.30; culmen, 1.90. 



Compared with a typical example of X.' emigrant Scl., from Guate- 

 mala (in the Lawrence collection, American Museum Nat. Hist.), there- 

 semblance is so very close as to leave no doubt as to their specific iden- 

 tity, such differences as are observable being not more than sufficient to 

 characterize a local race. These consist, in addition to those mentioned 

 in the diagnosis, in the longer, rather narrower bill (culmen 2.20 instead 

 of 2.10, depth at gonydeal angle .40 instead of .42), longer wing (5.70 

 instead of 5.45) and tail (5.10 instead of 4.85), much broader streaks on 

 chest, etc., and absence of distinct brown stripes on the throat. 



' When the two specimens described above were first received I was 

 able to compare them only with two specimens of so-called X. emigrants 

 from Southern Mexico (Jalapa), from which they were so very different 

 that I considered them specifically distinct. At the same time I was 

 greatly puzzled by several very marked discrepancies between Mr. 

 Sclater's »and other) descriptions of X. emigrans and the characters of 

 the Orizaba specimens, the latter having the belly distinctly barred 

 with dusky instead of having this feature entirely absent, the tail 4.70 

 to 5.00 inches (measured from insertion of the middle feathers) instead 

 of 4.50, and the bill mainly dusky instead of "a dirty horn-colored 

 white." The matter was quite cleared up, however, when I received 

 (from the authorities of the Americau Museum, in .New York) a speci- 

 men of the true X. emigrans, from Guatemala, agreeing entirely with 

 Dr. Sclater's description, and so different from all Mexican examples I 

 have seen that I can not avoid considering them specifically distinct.* 



The immature bird described above, with its rather darker colors, 

 smaller aud darker bill, and dusky margins to the pale buffy streaks on 

 the breast, etc., presents a rather close general resemblance to X.pro- 

 meropirhynchus, from Colombia, four specimens of which are now before 

 me. But the bill is much deeper, as well as less curved, the rump much 



* X sclatcri, sp. uov., described ou pp. 6-7. 



