4 EEVIEW OF THE GENUS XIPHOCOLAPTES RIDGWAY. 



Dendrocolaptes decumanus LiCHT.,Abh. Ak. Berl.,1820, 256, pi. 1, fig. 1; Verz. Doubl., 

 1823, 16.— Spix, Av Bias., i, 1824, 85, pi. 87 (Arapacu).— BuitM., Syst. Ueb., 

 in, 1856, 10. 

 Xiphocohiptes decumanus Less., Rev. Zool., 1840, 269. 

 Dendrocolaptes crassirostris Such, Zool. Jour., 1826, u, 115. 



Dendrocops crassirostris LafR.. Rev. et Mag. Zool., 1851, 325. 

 Dendrocolaptes guttatus Max., Beitr., in, 1831, 1120 (Rio de Janeiro, Capo Frio, and 

 Espiritu Sauto ; wee Light.). 



Hab. — Eastern Brazil, north to Bahia, south to northern portion of 

 Argentine Republic (Misiones, etc.). 



►Sp. Char. — Pileuin and. hind-neck black, rather broadly streaked 

 with buff; whole belly, thighs, anal region, and under tail-coverts dis- 

 tinctly and regularly barred with blackish; chin and nearly whole tbroat 

 white or pale buff"; tail dark or dull chestnut, contrasting with color of 

 upper tail-coverts. 



Adult (No. 36770, Bio de Janeiro, Brazil ; Natural History Museum 

 of Kio). — Pileum and hind-neck black, broadly streaked with buff, some 

 of the streaks of guttate form ; back and scapulars raw-umber, outer sur- 

 face of closed wings similar, but browner (nearly a mummy-brown hue); 

 upper back narrowly streaked with buff; lower back tawny brown or 

 mummy brown, deepening into rusty chestnut on rump and upper tail- 

 coverts; tail dark chestnut, the shafts still darker; inner webs of 

 remiges clear light chestnut, the terminal portion, however, dusky. 

 Lores, suborbital region, ear coverts, and narrow superciliary stripe pale 

 buff, narrowly and indistinctly streaked (except the first) with dusky ; 

 upper portion of auricular region blackish, streaked with buff, forming 

 a broken postocular stripe ; malar region brownish black, marked with 

 guttate spots or streaks of buff'. Chin and throat plain buffy white ; 

 rest of under parts light raw-umber, tinged with tawny, brighter and 

 deeper on sides and flanks, paler and more tawny on belly, thighs, anal 

 region, and under tail-coverts (the latter more rusty), which are dis- 

 tinctly and regularly barred with blackish; chest, breast, and sides nar- 

 rowly striped with pale dull buff, the streaks becoming much narrower 

 posteriorly, those along the median line, quite to the white of the throat, 

 margined with small dusky-brown spots. Under wing coverts pale 

 tawny or light ochraceous, barred with black. Upper mandible brown- 

 ish black ; lower mandible brownish in middle portion, dark grayish 

 basally, blackish at tip and horn-whitish on gonys; legs and feet olive- 

 dusky. Length (skin), 11.90 ; wing, 5.30 ; tail, 5.10; culmen, 2.10; depth 

 of bill at angle of gonys, .40 ; tarsus, 1.22 ; middle toe, 1.00. 



Young. — According to Count von Berlepsch (I c), the young have 

 shorter bills and broad rusty yellow guttate spots, instead of streaks, 

 on the top of the head. 



Among the eight adult examples of this species which have been ex- 

 amined in connection with the present review, are some notable varia- 

 tions of color, correlated with difference of locality, which if shared by 



