Vol . 



j 11 '] PROCEEDINGS OF THE NATIONAL MUSEUM. 3 



d l . Belly aud under tail-coverts distinctly barred with dusky. 

 e 1 . Bars on belly, etc., very distinct and continuous; pileum black, broadly 

 streaked; tail dark chestnut. Hab., Brazil. 



X. albicollis (Vieill.) (p. :5). 

 e 2 . Bars on belly, etc., less distinct, in places more or less concealed or in- 

 terrupted; pileum dusky brown, narrowly streaked; tail clear chestnut. 



Hab., Southern Mexico A. sclateri Ridgw. (p. 6). 



d~. Belly and under tail-coverts not distinctly barred with dusky. 

 e 1 . Middle of belly with very faint bars or transverse spots. 

 /'. Breast very narrowly streaked. Hab. Guatemala. 



X. emigrans Scl. (p. 7). 

 /-. Breast broadly streaked. Hab. Costa Rica. 



X. emigrans costaricemia Ridgw. (p. 8). 

 e 1 . Whole belly spotted with black (the spots in two rows on each feather, 

 separated by a more or less distinct buffy streak). 

 /'. Pileum broadly streaked (streaks much broader than shafts of the 

 feathers). 

 g'. Brown of lower parts, back, etc., of a ruddy or tawny hue; bill slen- 

 der, blackish; wing-coverts without streaks. Hab. Colombia. 



A". promeropirhynchu8, Less. (p. 10). 



g". Brown of lower parts, back, etc., of an olive hue; bill stouter, light 



horn-color; lesserandmiddle wing-coverts streaked with buff. Hab. 



unkuown A", virgatus Ridgw. (p. 11). 



/-. Pileum very narrowly streaked (streaks nearly or quite confined to the 

 shafts). 

 g-. Rusty-brown above, tawny-brown below, the tail clear rufous, like 



wings. Hab. Ecuador A. ignotus Ridgw. (p. 13). 



g 2 . Rich umber-brown abovo and below ; tail very dark chestnut, much 

 darker than deep chestnut wings. Hab. Ecuador to Peru. 



A. compressirostris Taczan. (p. 18). 



c". Pileum indistinctly streaked, and not darker than back. (Pileum and back 



cinnamon-brown, the former narrowly aud indistinctly streaked 



with pale cinnamon or rusty buff; beneath pale wood-brown, 



streaked with light buff.) Hab. Northeastern Brazil (Bahia). 



A. cinnamomeus Ridgw. (p. 15). 

 ft 1 . Pileum and hind-ueck without streaks (otherwise much like A. compressirostris). 



Hab. Bolivia X. simplicieepa Lafr. (p. 13). 



o". Back and scapulars bright cinnamon-rufous, like wiugs aud tail. 

 b l . Beneath pale cinnamon, with broader buffy streaks, the throat much paler; 

 under tail-coverts light cinnamon-rufous; above cinnamon-rufous. Hab. Par- 

 aguay aud Argentine Republic A. major Vieill. (p. 16). 



b 2 . Beneath deep cinnamon-rusty, with much narrower buffy streaks, the throat 

 much duller but scarcely paler; under tail-coverts bright chestnut; upper parts 

 bright chestnut. Hab. Bolivia A. major castaneus Ridgw. (p. 17). 



Xiphocolaptes albicollis (Vieill.). 



Dendrocopus albicollis Vieill., Nouv. Diet., xxvi, 1818, 117; Enc. Me"th., 1823, 625 

 (Brazil).— Ricicn., Handb., i, 1850, 189, pi. 539, fig. 3692. 



Dcndrocolaptcs alUcollis Gray, Gen. B., i, 1849, 140.— Bonap., Consp., i, 1850, 

 287— Lafr., Rev. et Mag. Zool., 1850, 98. 



Xiphocolaptc* albicollis Cab. & Heine, Mus. Heiu., II, 1859, 36 (Brazil).— Scl., Ibis, 

 1859, 118; Cat. Am. B.,1861, 163 (S. E. Brazil).— Scl. & Salv.,Ex. Orn., i, 

 1869, 72; Nom. Neotr., 1873, 63.— von Berl., J. f. O., 1-73, 253(Sta. Catarina).— 

 White, P. Z. S., 1882, 613 (Misiones, Arg. Rep.).— von Bfrl & von Jaering, 

 Zeitschr. fiir Orn., 1885, 146 (Taquara and Arroio Grande, Prov. Rio Grande 

 do Sul).— Scl. & Hudson, Arg. Orn., i, 1888, 200 (Misiones). 



