116 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(158.8); wing, 78.7-81.3 (80); tail, 72.4-74.2 (73.2); exposed culmen, 

 14-14.5 (14.2); depth of bill at base, 4.8-5.1; tarsus, 21.6-22.4 (21.8); 

 middle toe, 14.7-15.2 (15).^ 



Aclmlt female. — Head, neck, and upper chest uniform sepia brown; 

 interscapulars, scapulars, and smaller wing-coverts dusky, broadly 

 margined with lighter sepia brown, the back tinged with tawny olive; 

 greater wing-coverts, remiges, and rectrices dusky, edged with light 

 sepia brown ; lower back, rump, and upper tail-coverts orpiment orange; 

 under parts of body light buffy orange, slightly paler on abdomen, 

 deeper (inclining to orpiment orange) on under tail-coverts; bill bluish 

 gray basallj^, dusky terminally; legs and feet dusky horn color (in 

 dried skins); length (skins), 152.4; wing, 79.8; tail, 72.4; exposed cul- 

 men, 14.5; greatest width of mandibular rami, 3.8; tarsus, 21.6; mid- 

 dle toe, 15.^ 



Northern Colombia (Cartagena) to Isthmus of Panama (Lion Hill 

 station, Panama Railroad). 



1 have not been able to examine a specimen from the type locality 

 of this species (Cartagena), but the original description applies fairly 

 well to the Panama bird. The birds from eastern Peru, usually 

 referred to this species, however, are very distinct, and should proba- 

 bly bear the name Ramphocehis mslanogaster Swainson.' 



Bhamphocekts ludani Lafhesnaye, Eev. Zool., i, Apr., 1838, 54 (Cartagena, Colom- 

 bia; coll. Lafresnaye). — Bonaparte, Consp. Av., i, 1850, 242. — Sclateb, 

 Proc. Zool. Soc. Lond., 1856, 130 (monogr. ; Cartagena) ; Synop. Av. Tanagr., 

 1856, 54.— Lawrence, Ann. Lye. N. Y. , vii,1861, 331 (Lion Hill, PanamaE. E. ). • 



Tanagra (Ehamphocelus) ludani Lafresnaye, Mag. de Zool., s^r. 2, 1839, Ois., 

 p. 1, pi. 2. 



Rhamphocoslus ludani Salvin and Godman, Biol.-Centr.-Am., Aves, i, 1883, 284, 

 part (Lion Hill; Colombia). — Sclater, Cat. Birds Brit. Mus., xi, 1886, 173, 

 part (Panama; Colombia). 



Rlamphopis] ludani Gray, Gen. Birds, ii, 1844, 363. 



RAMPHOCELUS DIMIDIATUS DIMIDIATUS Lafresnaye. 

 CSIUSON-BACKED TANAGEB. 



Admit male. — Head, neck, upper chest, back, and scapulars plain 

 dark crimson-maroon, the feathers graj basally and more or less 

 broadly black medially, the subbasal black somewhat exposed on scap- 

 ulars; wings and tail uniform black; lower back, rump, upper tail- 

 coverts, and under parts of body (except abdomen) blood red; abdomen 

 black; maxilla black, mandible bluish gray (pale blue in life?); legs 

 and feet grayish dusky (bluish gray in life?); length (skins), 149.9- 

 164.9 (151.9);* wing, 75.7-81.3 (77.5); tail, 66.8-71.6 '69.1); exposed 



' Two specimens, both from Panama. 

 ' One specimen, from Panama. 



■'' Ramphopis melanogaster Swainson, Anim. in Menag., 1838, 359 (Peru; coll. Sir W. 

 Hooker). 

 *Six specimens. 



