400 On some rare Species of Neotropical Birds. 



instead of cuneate markings on the breast, white lores and 

 superciliaries, besides its mucli greater size. In the type 

 specimen (which I believe is still unique) the tail appears to 

 be very much more graduated than in any of its congeners, 

 the lateral feathers being 2*10-2'25 inches shorter than the 

 middle rectrices; but a close inspection shows that these 

 feathers are not fully developed. 



2. PyRANGA ERYTHROCEPHALA (Sw.). 



This plainly-coloured Pyranga is apparently more nearly 

 related to P. roseigidaris, Cabot, than to any other known 

 species. Not only do the two agree pretty well in size and 

 proportions, but the coloration also presents some similarity. 

 Both have the pileum dull red and the throat pale red, with 

 the rest of the plumage dull-coloured and un variegated ; 

 but while P. erythrocephala is olive-green above and yellow 

 below, P. roseigularis is greyish above, with dull reddish 

 wings and tail, and whitish below, with pale red or pink lower 

 tail-coverts. It is possible that full-j)lumaged males of 

 P. erythrocephala may have the sides of the head also red ; 

 but it seems more likely that in this species, as in P. rosei- 

 gularis, the two red areas are always more or less distinctly 

 separated by the differently coloured lores, orbits, and 

 auriculars. 



3. ZONOTRICHIA QUINQUESTRIATA, Scl. & Salv. 



This very peculiarly marked and exceedingly distinct- Spar- 

 row apparently belongs to the group which Dr. Coues has 

 designated by tlie generic term Amphispiza, of which the 

 Emberiza bilitieata of Cassin is typical, and to which should 

 also, in my opinion, be refei'red the " Zonotrichia " mysta- 

 calis of Hartlaub. The true Zonotrichice are a very well cir- 

 cumscribed group of purely Nearctic species, and include, 

 so far as known, only Z. leucophrys, Z. intermedia, Z. gam- 

 beli, Z. coronata, and Z. albicollis. Where Embe7'iza pileata, 

 Bodd., belongs I am undecided; but I cannot believe that it 

 should be referred to Zonotrichia. 



4. Petjc^a notosticta, Scl. & Salv. 



This is much the largest species of the genus, approaching 



