288 ON THE CLASSIFICATION OP BIRDS. 
Strong, robust. Lateral toes unequal, the inner short- 
est. Claws strong, and fully curved. Africa. 
L. pileatus. Part 5. No. 1 99. 
Frinoilla, Linn. Bill lengthened, conic ; the culmen 
not curved ; the tip shghtly notched, but not reflected. 
Commissure straight. Claws small, slender, hut 
slightly curved. 
Passerella, Sw. Bill short and perfectly conic, thick 
at the ha», and rather abruptly pointed at the tip, 
which is entire. Culmen perfectly straight. Both man- 
dibles of equal thickness. AVings moderate; the first 
quiU shorter than the second, third, and fourth, which 
are the longest. Tail moderate, broad, and nearly 
even. Feet large, strong. Middle toe longer than the 
tarsus ; inner toe much shorter than the outer. Claws 
long, slender, and but slightly curved ; hinder claw 
as long as the toe. America. 
P. Iliaca. Wilson, iii. 22. f. 4. 
Fringilla. Bill forming a perfect, slightly lengthened 
cone, with both mandibles of equal thickness ; the 
upper one slightly notched, but not indexed at the tip : 
the commissure straight. Wings lengthened, pointed ; 
the first quill always longer than the fifth. T ail mode- 
rate, forked ; the outermost feathers the longest. L^ 
slender. Tarsi moderate. Lateral toes equal ; middle 
toe very long. Europe and America. 
F. coelebs. Sel. pi. 54. f. 6, 7. hyemalis. Wils. ii. 16. f. 6. 
montifringilla. Ib. f. 8, 9. graminea. Ib. 31. f. 5. 
Zonotrichia, Sw. Bill as in Fringilla: the commis- 
sure straight. Wings not lengthened ; the first quiU 
shorter than the four next, which are of nearly equal 
length. Tail rather lengthened, slightly divaricated ; 
the outermost feathers shortened. Lateral toes 
slightly unequal. Tarsus and middle toe of equal 
length. America only. 
leucophrys. Wils. iv. 31. f. 4. albicollis. Wils. pi. 22. f. 2. 
Pennsylvanica. Ib. iii. 5. f. 2. subtorquata. * Sp. ii. 53. f. 3. 
* The specific name given by Spix to this bird, had been 
previously used by Wilson for another. 
