182 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Genus BROTOGERIS Vigors. 



BrotogerisO' Vigors, Zool. Journ., ii, 1825, 400. (Type, Psittacus pyrrhopterus 

 Latham.) 



Brotogerys (emendation) Agassiz, NomencL ZooL Index Univ., 1846, 54. 



Psittovius Bonaparte, E.ev. et Mag. de Zool., (2) vi, 1854, 151. (Type, Psitta- 

 cus tovi Gmelin=P. jugularis Miiller.) 



Sittace (not of Wagler, 1832) Gray, Hand-list, ii, 1870, 150. (Type, Psittacus 

 St. i/ioma Miiller =P. iuiGmelin.) 



Small, wedge-tailed, Psittacidse (length about 165-180 mm.) with 

 bill much compressed and as long as or longer than deep ; cere large, 

 wholly unfeathered, its anterior outline nearly straight; tail less than 

 two-thirds as long as wing, more or less graduated, with rectrices 

 strongly tapering distally (the middle ones sometimes obtusely 

 pointed), and color green with under surface of remiges blue or 

 bluish green, sometimes with under wing-coverts, primary coverts, 

 forehead, or chin, orange. 



Bill moderate in size (more than half as long as head), longer than 

 deep (its depth at base decidedly less than length of culmen), much 

 compressed; depth of maxilla at base equal to less than half the 

 length of culmen, the latter narrowly rounded or obtusely ridged, 

 regularly and strongly decurved from near base (or from base), some- 

 times not longer than outer hind toe without claw, sometimes longer 

 than outer front toe without claw; maxillary unguis rather narrowly 

 conical or cuneate and obtusely pointed in vertical profile, its width 

 at base of the distinctly corrugated palatal surface decidedly less than 

 its length; maxillary tomium distinctly (sometimes prominently) 

 lobed behind the deep and broad post-ungual notch or incision; 

 depth of mandible at base decidedly to very much less than length 

 of gonys and very much less than its width at same point, the sides 

 of mandible usually somewhat flattened, the under side broadly 

 rounded ; mandibular tomium sometimes broadly notched behind the 

 recurved, chisel-like, truncate, but not distinctly flattened, tip, but 

 usually broadly and rather deeply concave. Wing moderate, pointed, 

 the longest primaries exceeding distal secondaries by two-fifths to 

 nearly half the length of wing; tenth, ninth, ninth and tenth, or 

 eighth, ninth and tenth primaries longest, the tenth (outermost) 

 usually with inner web slightly emarginated near tip. Tail less 

 than two-thirds (sometimes but little more than half) as long as wing, 

 graduated for from less than one-fourth to two-fifths its length, the 

 rectrices more or less strongly tapering terminally, with tip narrowly 

 rounded (the middle ones sometimes subacuminate). Tarsus not 

 shorter than inner anterior toe without claw, sometimes longer (but 

 always shorter than inner anterior toe with claw). 



Plumage and coloration. — Head completely feathered except 

 orbital region, chin, and cere, the latter very broad toward culmen, 



oBporos, mortalis; yrtpvs, vox — Agassiz. 



