CHERRIE: ORNITHOLOGY OF THE ORINOCO REGION. 167 



CoEREBA GUIANENSIS (Cabanis). 



Certhiola guianensis Cab., Mus. Hein. I. 1850. p. 97. 

 Coereba guianensis Berlepsch & Hartert, p. 17. 



Klages sent specimens to the Tring Museum that were collected 

 at Suapure on the Caura River; and there is a typical example in the 

 American Museum collection, sent by the same collector from Ciudad 

 Bolivar. So that C. I. lutcola and C. guianensis are found together at 

 that point. 



TANGARIDAE EUPHONIAS AND TANAGERS. 



Eighteen species and subspecies were collected by the writer on 

 the middle and upper Orinoco, in the immediate vicinity of the river, 

 which together with twelve additional species taken at various points 

 on the Caura River formed the list of thirty included in Berlepsch and 

 Hartert's paper. 



Probably all, excepting Piranga rubra, are resident species, although 

 the number of species or the number of individuals that may be found 

 in any particular locality at any given season is influenced largely by 

 the ripening of the various fruits that constitute their chief food. 



KEY TO THE GENERA, SPECIES AND SUBSPECIES OF TANGARIDAE. 



a. Middle of belly and general color of under parts yellow, yellowish or 

 rufous orange (not ochraceous nor buff) the throat and upper breast 

 and the sides and flanks may or may not be uniform with the belly. 

 b. No blue or black markings on sides or flanks. 

 c. Throat black, blue-black or purplish black. 



d. No yellow or yellowish markings on the head (male) Tanagra ' rufiventris. 



d'. Forehead and more or less of crown yellow or yellowish. 



e. Under tail coverts white Tanagra olivacea olivacea. 



e'. Under tail coverts yellow or yellowish white. 

 /. Under parts dark chrome yellow; yellow crown patch ex- 

 tending little, if any, back of eye and truncated, rather than 

 rounded in outline; back and nape with a decided violace- 

 ous gloss Tanagra chlorotica aurea. 



/'. Under parts pale orange-yellow; yellow crown patch ex- 

 tending back of eye and posterior outline convex rather than 



truncated ; back and nape with a decided steel blue gloss Tanagra Irinitatis. 



c'. Throat not black, blue-black, or violaceous black. 



d. Upper parts olive or olive-greenish (and crown not blue) . 



e. Crissum rufous-orange (female) Tanagra rufiventris. 



e'. Crissum, orange-yellowish, yellow, yellowish or yellowish white. 



I chlorotica aurea. 



f. Wing less than 60 mm. (females) Tanagra \ trinitatis. 



\olivacea olivacea. 

 * (violacea lichten- 



f. Wing not less than 60 mm. (females) Tanagra j sieini. 



[melanura. 

 d'. Upper parts black with violaceous or steel blue gloss. 



e. Outer tail-feathers marked with white on inner webs Tanagra violacea lichten- 



steini. 



e'. No white markings on inner webs of outer tail-feathers Tanagra melanura. 



b'. Sides and flanks blue flecked with black. 



c. M iddle of breast and abdomen pale sulphur yellow ; shoulder patch of 

 caerulean rather than greenish blue (Upper Orinoco and Upper 

 Caura riverregion) Tangara mexicana medta. 



l The characters here employed to distinguish the various species of Tanagra apply, with rare excep- 

 tions, to the males only. 



