BIRDS OF NORTH AND MIDDLE AMERICA. 383 



Bange. — Guatemala to southern Brazil and Bolivia. (Two species.) 

 This genus contains, so far as known, only two species. One of 

 these, C. purpurascens Sclater and Salvin, is of very restricted range, 

 being confined to Venezuela; the other occupies almost the entire area 

 of continental tropical America, or from Guatemala to southern Brazil 

 and Bolivia. In various parts of this extensive range it has become 

 differentiated into an undetermined number of geographic forms or sub- 

 species, only one of which, however, occurs within the limits of the 

 present work. The adult male of O. purpurasains differs from that of 

 C. spiza (in all its forms) in having the pileum mainly blue instead of 

 uniform black, and in having the general color purplish blue instead 

 of green. The female and young are unknown. The Central Ameri- 

 can form of O. spiza is larger and of a less bluish green color than its 

 South American representatives. 



CHLOROPHANES SPIZA GUATEMALENSIS (Sclater). 

 NORTHERN GREEN HONEY CREEPER. 



Similar to C. s. spiza, but larger (especially the bill), and adult male 

 with green of under parts less bluish. 



Adult unale. — Pileum, sides of head (down to and including malar 

 region), and chin, deep black; rest of plumage very glossy viridian 

 green, more bluish in some lights; alula, primary -coverts, primaries, 

 and rectrices dusky, edged with viridian green, the middle rectrices 

 green with a median streak of black; maxilla black, edged (except 

 toward tip) with yellowish; mandible yellowish (in dried skins ') ; legs and 

 feet horn brown or dusky (in dried skins); length (skins), 122.9-143.8 

 (130.6); wing, 68.6-76.2 (69.9); tail, 44:.2-53.3 (48.5); exposed culmen, 

 15.5-17.5 (16.5); tarsus, 17-19.1 (18); middle toe, 10.9-13.7 (12.2).' 



Adult female. — Above plain glossy yellowish grass green, beneath 

 lighter, more apple green; bill and feet as in adult male, but mandible 

 usually more or less tinged with dusky; length (skins), 117.6-141.7 

 (129.5); wing, 65.3-71.1 (69.6); tail, 42.7-.i2.6 (47.2); exposed culmen, 

 15.5-17.8(16.5); tarsus, 17.5-18.8(18.3); middle toe, 11.9-12.7 (12.4).= 



Young male. — Similar to the adult female, but duller in color. 



Immature male. — Variously intermediate in coloration between the 

 adult male and female, according to age. 



Eastern Guatemala (Choctum, Eampamak, Yaxcamnal, etc., 2,000 

 to 3,000 feet), to Isthmus of Panama (to western Ecuador?); Cuba??? 



^According to Richmond (Proc. U. S. Nat. Mus., xvi, 1893, 487) the mandible in 

 life is naplea yellow, the iris burnt sienna. 

 ^Twelve specimens. 

 ' Eight specimens. 



