BIRDS OF NORTH AND MIDDLE AMERICA. 63 
whitish (sometimes intermixed with grayish), the median interscapu- 
lars extensively white basally, forming a conspicuous patch when 
feathers are parted; rump buffy grayish, the upper tail-coverts 
darker, indistinctly margined with whitish; tail black, the rectrices 
tipped with white and edged for middle portion with same; wings 
black, they middle and greater coverts broadly tipped (mostly on 
outer webs) with white, the remiges edged (except on basal portion 
of distal secondaries and proximal primaries) with white; under parts 
plain buffy white, deepening into buff on chest and tawny-buff on 
malar region, the sides and flanks tinged with pale buffy grayish and, 
sometimes, very indistinctly streaked with darker; bill, etc., as in 
adult male; length (skins), 87-95 (90.5); wing, 48-52 (49.8); tail, 
25.5-27 (25.7); tarsus, 14-15.5 (14.8); middle toe, 10.¢ 
Young female—Similar to the adult female but without any con- 
cealed white on interscapular region and under parts more deeply 
colored (buff deepening into tawny on chest and sides of head and 
neck). 
Paes (Veragua; Panama; Lion Hill; San Pablo), through 
Colombia (Turbo; Remédios, Antioquia; Bogoté), Venezuela (Mun- 
duapo; Nicare; La Pricién, Rio Caura; Rio Mato; Suapuré), to 
British Guiana (Demerara; Camacusa; Takutu R.; Carimang R.) 
and western Ecuadér (Esmeraldas; Chimbo; Gualaquiza; Gualea; 
Foreste del Rio Peripa; San Nicolas; San Javier; Pambilar; Intac),° 
Cayenne, and eastern Brazil. 
[Sitta] surinamensis GmE in, Syst. Nat., i, pt. i, 1788, 444 (Surinam; based on 
Surinam Nuthatch Latham, Gen. Hist., iv, 72, pl. 62). 
Myrmotherula surinamensis ScuatEerR, Proc. Zool. Soc. Lond., 1858, 234, pl. 141, 
fig. 1 (monogr.); Cat. Am. Birds, 1862, 179 (Cayenne; Esmeraldas, w. Ecuador); 
Cat. Birds Brit. Mus., xv, 1890, 231, part —Cassin, Proc. Ac. Nat. Sci. Phila., 
1860, 190 (Turbo, Colombia) —Lawrencs, Ann. Lyc. N. Y., vii, 1862, 293 
(Lion Hill, Panam4).—Scrater and Satvin, Proc. Zool. Soc. Lond., 1864, 
856 (Lion Hill); 1879, 525 (Remédios, Antioquia, Colombia; habits; descr. 
nest and eggs).—Satvin, Ibis, 1874, 311 (Turbo, Colombia; Panam4); 1885, 
425 (Camacusa, British Guiana) —BrRLEPpscH and TaczaNowskI, Proc. 
Zool. Soc. Lond., 1883, 564 (Chimbo, w. Ecuadér; crit.)—Satvin and Gop- 
@ Five specimens. 
Locality. Mica: | al, | SMe | Sar als 
MALES. 
‘Three adult males from Panamé (line of railway).............- 50.5 26.3 15.3 17.3 10 
One adult male from Turbo, n. w. Colombia................... 52.5 28.5 14 17 9.5 
FEMALES. 
Three adult females from Panam&..........-.-------------200+ 49 26.2 15.2 17.5 10 
One adult female from British Guiana............2..-.---2205- 50 23 14 17.5 10 
bI have seen specimens from Panam4, Colombia, and British Guiana only. 
