390 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult fi'ii tale. — Pileuni iind hindnock dull gra3'ish blue or orreenish, 

 the forehead (sometimes crown also) usually narrowly streaked with 

 whitish; rest of upper parts plain dull grass green or parrot green; 

 lores brownish dusky; malar region blue or parti}' blue; chin and 

 throat butf ; median under parts dull whitish, the chest streaked with 

 blue; sides and flanks plain grayish green; bill black; legs and feet 

 sage green in life/ brownish in dried skins; length (skins), 93.5-103.1 

 {S^'^.^)\ wing, 50.8-57.4: (54.6); tail, 25.4-30.5 (27.9); exposed culmen, 

 18.5-19.G (19.1), tarsus, 14.7-15.7 (15); middle toe, 9.4-10.7 (10.4).' 



Young male. — Similar in coloration to the adult female. 



Immature male. — Variously intermediate in color between adult 

 male and female, according to age. 



Central America, from Guatemala (Choctum) to the Isthmus of 

 Panama (line of Panama Railroad). 



Ccereba cxrulea (not Certlna atrulea Linnseus) Rclater, Proc. Zool. Soc. Lond., 

 1856, 140 (Veragua). 



Ccereba lucida ScLATER and Salvin, Ibis, Ist ser., i, Jan., 1859, 14 (Guatemala); 

 Proc. Zool. Soc. Lond., 1864, 349 (Panama R. R.).— Moore, Prof. Zool. 

 Soc. Lond., 1859, 53 (Honduras). — Lawrexck, Ann. Lye. N. Y., vii, 1861, 291, 

 318 (Panama R. R. ). — Sclater, Cat. Am. Birds, 1862, 53 (Choctum, Vera 

 Paz, Guatemala); Cat. Birds Brit. Mus., xi, 1886, 35 (Choctum, Guatemala; 

 Bugaba, Veragua; Lion Hill, Panama R. R. ). — Cassin, Proc. Acad. Nat. 

 Sci. Phila., 1864, 267 (monogr.).— Salvin, Proc. Zool. Soc. Lend., 1867, 137 

 (David, Chiriqui); 1870, 185 (Bugaba, Veragua). — Boucard, Liste Ois. 

 Guat, 1878, 32 —Salvin and Godman, Biol. Centr.-Am., Aves, i, 1883, 249. 



[Ccereba] lucida Gray, Hand-list, i, 1869, 117, no. 1453.— Sclater and Salvin, 

 Nom. Av. Neotr., 1873, 16. 



Arbelorhina lucida Heine and Reichenow, Nom. Mus. Hein., Orn., 1882, 60. — 

 Zeledon, An. Mus. Nac. Costa Rica, i, 1887, 108 (San Jose, Puerto Limon, 

 and Pozo Azul de Pirris). — Cherrie, Auk, ix, 1892 23 (San Jose, Costa 

 Rica); Expl. Zool. Costa Rica, i, Aves, 1893, 17 (Boruca and Terraba, s. w. 

 Costa Rica; crit.).— Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 488 (Rio 

 Escondido, Nicaragua; habits; color of unfeathered parts, etc.). 



Cyanerpes lucidus Oberiiolser, Auk, xvi, Jan., 1899, 34 (synonymy; range). 



Genus DACNIS Cuvier. 



Bacnis Cuvier, Regne Anim., i, 1817, 395. (Type, MotacUla cayana Linnaeus.) 

 Cyanodaaiis Cassin, Proc. Ac. Nat. Sci. Phila., xvi, Nov., 1864, 268. (Type, 



MotacUla cayana Linnaeus. ) 

 Polidacnis Cassin, Proc. Ac. Nat. Sci. Phila., xvi, Nov., 1864, 269. (Type, Dacnis 



angelica De Filippi. ) 

 Eudacnis Cassin, Proc. Ac. Nat. Sci. Phila., xvi, Nov., 1864, 270. (Type, Dacnis 



fiaviventris Lafresnaye and D'Orbigny. ) 



CcErebidae with the bill shorter than the head, acute-conical or wedge- 

 shaped, very slightly decurved terminally (at least the maxilla), and tip 

 acute; tarsus not longer than middle toe with claw; adult males blue 



1 Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 488. 

 •^ Four specimens. 



I 



