l86 BROOKLYN IXSTITL'TE MUSEUM. SCIENCE BULLETIN 2. 6. 
/'. Under parts not white. 
j. Throat white Pttylus groisia. 
i'. Throat black. 
k. Under wing-coverts j'ellow CaryolhrausUs caiiaaensis 
canadensis. 
k'. Under wing coverts rose red Periporphyrus eryihromdas. 
S'. Wing not over bsnim., usually less. 
h. Culmen not strongly convex; nia.\illary tomia nearly 
straight but with basal portion strongly and abruptly 
deflected Tiaris fidiginosa. 
h'. Culmen distinctly strongly convex: maxillary tomia not 
abruptly deflected at base Sporophila. 
i. More or less black on head. 
j. Broad white cheek stripe. 
k. Lower throat white, mottled with black Sporophila boum-onides. 
k'. Lower throat not mottled with black Sporophila lineola. 
j'. No white cheek stripe, entire sides of head, throat 
and upper breast black Sporophila gulturalis. 
i'. No black on head. 
j. Under parts chestnut Sporophila minuta ntiniita. 
j'. Under parts not chestnut. 
k. Throat slate grey, no white on cheeks or cliin . . , Sporophila srisea grisea. 
k'. Throat ash grey, chin and base of cheeks white . Sporophila plitmbea ichit* 
PiTVLUS GROssus (Lioiiaeus). 
Loxia grossus L., Syst. Nat. ed. 12. 1766. p. 307. 
Pitylus grossus Berlepsch & Hartert, p. 24. 
The writer did not meet with this species 011 the Orinoco proper, 
but specimens were collected for the Tring Museum on the Caura 
River at Suapure, Nicare and La Pricion ; and Klages sent specimens 
to the American Museum that were collected at La Union during 
September. October and January. 
C-i ANocoMi's.\ RoTiiscHiLDi (Bartlett). 
Cuiraca rothschUdi E. Bartl., Ann. Mag. Nat. Hist. 1890. p. 168; Hell- 
mayr, Novit. Zool. XIL 1905. \>. 2y~. 
Guiraca cayanea rothschUdi Berlepsch & Hartert. p. 25. 
This species was seen on the upper Orinoco at Munduapo during 
February, 1899. It has not been seen by the writer on subsequent 
expeditions. Specimens were collected at La Pricion on the Canra 
River by Andre. 
Oryzoborus crassirostris (Gmelin). 
Loxia cmssirostris Gm., Syst. Nat. L 1788. p. 862. 
Orv::oborus crassirostris Berlepsch & Hartert. p. 23. 
Native name Pico dc plata grandc. 
