196 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Genus UROCHROMA Bonaparte. 



Pyrrhulopsis (not of Eeichenbach, 1850) Bonaparte, Rev. et Mag. de Zool., 



(2), vi, 1854, 152. (Type, Psittacus huetii Temminck.) 

 Touit Gray, List Gen. and Subgen. Birds, 1855, 89. (Type, Psittacus huetii 



Temminck.) 

 Urochroma Bonaparte, Naumannia, 1856, Conspectus Psittacorum, genus 30. 



(Type, Psittacus huetii Temminck.) 

 Euchroa (emendation; not of Gould, 1856) Sundevall, Met. Nat. Av. Disp. 



Tent., 1872, 70. (New name for Urochroma Bonaparte, on grounds of 



purism.) 

 Euchroura Eeichenow, Journ. fur Orn., Oct., 1881, 257. (Type, Psittacus 



purpuratus Gmelin.) 



Small short-tailed parrots (length about 140-180 mm.) with 

 very strongly arched culmen and gonys, wide, naked cere, tarsus 

 much shorter than outer front- toe (without claw), and the short, 

 truncate or slightly rounded tail purple, red, golden, or yellowish, 

 crossed by a terminal or subterminal band of black or green. 



Bill relatively stout, with very strongly curved outlines (in lateral 

 profile).; culmen equal to or slightly longer than outer anterior toe 

 (without claw), very strongly decurved, broadly rounded (not 

 ridged) ; depth of maxilla at base less than its width at same point; 

 maxillary tomium more or less distinctly sinuated, the more or less 

 distinct (sometimes obtusely angulated) prominence situated rela- 

 tively far back (near middle of tomium) ; palatal surface of maxillary 

 unguis rather deeply excavated, apparently smooth or with very 

 indistinct V-shaped corrugations; mandible much wider than deep 

 at base, tbe very broad gonys strongly convex, the tomium deeply 

 excised or obtusely notched sub terminally, elevated and obtusely 

 angulated or lobed subbasally; cere very broad, naked, that of the- 

 mandible narrower but conspicuous. Nostril small, roundish, 

 exposed, the immediately surrounding portion of cere distinctly 

 (sometimes conspicuously) tumid. Wing long and pointed, the 

 longest primaries exceeding distal secondaries by much more than 

 one- third the length of wing; tenth (outermost) or ninth primaries 

 longest (eighth sometimes longer than tenth), the outermost very 

 faintly, if at all, sinuated on subterminal portion of inner web; 

 three outer primaries with tips sometimes slightly attenuated and 

 decurved. Tail decidedly less than half as long as wing, for greater 

 part overlaid by coverts, truncate or slightly rounded, the rectrices 

 rigid and relatively broad. Tarsus about equal in length to inner 

 anterior toe (without claw). 



Coloration. — Tail purplish, red, golden, or yellowish, with a more 

 or less distinct terminal or subterminal band of black or green. 



Range. — Eastern Panama to Guiana and southeastern Brazil. 

 (Nine species, of which only two occur within the geographic area 

 of this work.) ' 



