194 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



and Pozo del Rio Grande, Costa Rica; descr. young). — Carriker, Ann. Car- 

 negie Mus., vi, 1910, 635 (Costa Rica; crit.; habits; descr. nest and eggs). 

 [Synallaxis] pudica Sclater and Salvin, Nona. Av. Neotr., 1873, 63, part. — 

 Sharpe, Iland-list, iii, 1901, 55, part (Honduras, etc.). 



SYNALLAXIS ALBESCENS LATITABUNDA Bangs. 



COSTA RICAN GRAY-BREASTED SYNALLAXIS. 



Similar to S. a. alhigularis (Sclater),'* of Colombia and Venezuela, 

 but smaller, gray of chest averaging deeper and purer (less brownish), 

 cinnamon-rufous of occiput more extended, and greater wing-coverts 

 brighter cinnamon-rufous. 



Adults (sexes alike). — Forehead (back to at least middle of eyes) 

 mouse gray, the feathers with indistinct mesial streaks of darker; 

 crown, occiput, and nape plain cinnamon-rufous; back, scapulars, 

 rump, upper tail-coverts, tail, and remiges plain grayish brown (hair 

 brown), the shafts of rectrices darker, the outer webs of secondaries 

 and sub-basal portion of that of inner primaries usually slightly 

 tinged with cinnamon; lesser and middle wing-coverts uniform cin- 

 namon-rufous (somewhat lighter than color of crown and occiput), 

 the greater coverts similar but (usually) shghtly paler and duller; 

 loral region grayish white anteriorly, passing into pale mouse gray 

 posteriorly, the suborbital and malar regions similar; auricular region 

 deeper mouse gray, narrowly streaked with white; supra-auricular 

 region, hindneck, sides of neck, chest, and sides of breast plain 

 mouse gray, sUghtly paler on median portion of chest; cliin and 

 throat white, the lower throat with a more or less concealed patch 

 of dusky or dark slate color, the feathers tipped with white or pale 

 gray and marked by a narrow mesial streak of the same; abdomen 

 and median portion of lower breast white; sides, flanks, and under 

 tail-coverts Uglit broccoli brown or drab; under wing-coverts pale 

 pinkish buff, the inner webs of remiges indistinctly edged with the 

 same; bill black, the lower-basal portion of mandible whitish (in 

 dried skins) ; iris brown; legs and feet light horn color (in dried skins). 



Young. — Above plain brown (between sepia and raw-umber), the 

 occipital region tinged (more or less) with more rufescent brown, the 

 tail more russet brown, the middle and greater wing-coverts mar- 

 gined or edged with russet; lesser wing-coverts cinnamon or russet; 

 general color of under parts pale bufTy brown, passing into pale 

 brownish buff on throat and chin and into brownish buff on flanks, 

 the sides of chest and breast shaded mth deeper and more grayish 

 brown, the abdomen incHning to buffy white. 



Adult maZe.— Length (sldns), 129-139 <135); wing, 51.5-54 (52.2); 

 tail, 66-7G (68.5); culmen, 11-12 (11.7); tarsus, 18.5-19.5 (18.9); 

 middle toe, 12.5-13.5 (12.9).^ 



o- See p. 188. & Eight specimens. 



