378 BULLETIN 50, LTNITED STATES NATIONAL MUSEUM. 



re. Outermost itriiaary longer than sixth; wing-tij) nearly twice as long as tarsus, 

 the latter shorter than middle toe with claw; l)ill more slender; a<lult 

 males rich blue with wings and tail, together with throat or back, black; 

 adult females plain greenish above, beneath paler and more yellowish, 



more or less streaked with darker Cyanerpes (p. 384) 



hb. Exposed culmen shorter than tarsus; 1)111 more conical (or bent wedge-shai)ed) 

 with tij) acute. 

 c. Outermost primary equal to or longer than sixth; tarsus slightly longer than 

 middle toe with claw; adult males blue and black or yellow and l)lack; 



females much duller in color, without l)lack areas Dacnis ( p. ;>90) 



cr. Outermost primary shorter than sixth; tarsus nn;ch longer than middle toe 



with claw; adult males neither blue and black nor yellow and black. 



d. Bill more slender, strongly decurved terminally (the gonys more or less 



concave); commissure as long as middle toe with claw; tail rounded; 



under parts white and yellow or gray and yellow, or else whole plumage 



black (sexes alike in color) Coereba (p. 397) 



dd. Bill stouter, not decurved terminally (the gonys straight); commissure 

 shorter than middle toe with claw; tail even or slightly emarginate; 

 adult male dull grayish blue with rufous throat-patch; female l)rownish 

 above, paler beneath Glossiptila (p. 423) 



Genus DIGLOSSA Wagler. 



Diglossa Waglek, Isis, 1832, 280. (Type, IJ. haritula Wagler.) 



Agr'dorhinus Bonaparte, Nuovi Ann. vSc. Nat. Bologna, i, 1838, 408. (Type, 



A. sittaceun Bona])avte,— Diglossa hiirituJa Wagler.) 

 Aneijlorh'mus (emendation) Sclater, Ibis, 1875 204 (ex Agrdorhiuus Bonaparte). 

 Sernrostrum Lapresnaye and D'Orbigny, Mag. de Zool., 1838 (Synopsis Avium, 



ii, p. 24). (Type, .S'. carhonarhun Lafresnaye and D'Orbigny.) 

 Unciroslrum Lafresnaye, Rev. Zool., 1839, 100. (Type, Serrirosirmiiriirltiimiriiiiu 



Lafresnaye and D'Orbigny.) 

 ('(iiii/julups LiCHTENSTEiN, Nomeucl. Av. Mus. Berol., 1854, 50. (Tyi)e, (!. }i(niiid,as 



IJchtenstein,=Z)(V//o.w(/ haritula Wagler. ) 

 7V/)//;'o(%/o.s.sv( Cassin, Proc. Ac. Nat. Sci. Phila., xvi, Nov., 18(i4, 273. (Type, 



Ser7'irostru7n carhonariuni Lafresnaye and D'Orbigny.) 

 Pi/rrhudiglossa Cassin, Proc. Ac. Nat. Sci. Phila., xvi, Nov., 1864, 274. (Type, 



Diglossa mgstacalis Lafresnaye. ) 

 C'ganodiglossu Cassin, Proc. Ac. Nat. St'i. I'liila., xvi, Nov., 1864,274. (Type, 



Agrilorhinus personatiis Fraser. ) 

 Melanodiglossa Cassin, Proc. Ac. Nat. Sci. Pliila., xvi, Nov., 1864,274. (Type, 



Unciroslrum lafresnayei Boissoneau. ) 



Coerebidie with the hill nmch coiiipro.ssed and inclined upward ter- 

 minally.^ the tip of the maxilla ahniptlv hooked or uncinate: mandible, 

 recurved, falcate, ver}- acute at tip, with l)ase of o"onys decidedly ])os- 

 terior to nostrils. 



Bill shorter than head, its lower outline conspicuously longer tiian 

 the up})er; culmen more or less elevated basal ly. then straight or 

 more or less concave, the terminal })()rtion al)ruptly decurved, the tip 

 of the maxilla forming a distinct hook or unguis, preceded bj'^ a more 



'The upward inclination of the bill in this genus is a very striking feature. In 

 most birds the bill projects on a line with the longitudinal axis of the head, but in 

 Diglossa it inclines upward at a very decided angle with this axis. 



