24 
NORTH AMERICAN BIRDS. 
R. Tarsus not less than .70 of an inch. Outer webs of tail-feathers with dusky 
predominating. 
a. Crown without any rufous, or with only a tinge. 
2. D. petechia. Nape olive-green (except in juv .') ; sides streaked (ex- 
cept in jav.). Crown /greenish, sometimes tinged with orange-rufous 
anteriorly ; lower webs of wing-coverts, etc., not pure yellow, and rump 
and upper tail-coverts without any admixture of yellow. Hob. West 
Indies (except Barbadoes and Trinidad) ; not on the Continent. (Nu- 
merous varieties.) 
3. D. aureola. Nape always ashy ; sides never streaked. Abdomen, anal 
region, and axillars nearly white : forehead and crown strongly tinged 
with rufous ; nape dark ashy. Wing-formula, 2, 3, and 4 equal, 5, 1 = 6 ; 
wing, 2.55 ; tail, 2.00 ; bill, .32 ; tarsus, .75. Hob. Galapagos Islands. 
b. Crown with only a sharply defined ovate patch, of dark purplish-rufous. 
4. D. capitalis. A broad superciliary stripe of pure yellow ; wing- 
formula, 3 = 4, 2, 1 = 5; wing, 2.30 ; tail, 2.00 ; bill, .30 ; tarsus, .70. 
(9 distinguishable from that of the varieties of petechia by the dis- 
tinctly yellow upper eyelid, and considerably shorter tarsus.) Hob. Bar- 
badoes Island, West Indies. 
c. Head all round rufous. 
5. D. vieilloti. ( 9 not distinguishable from that of other species.) 
Hab. Continental Middle America. (Numerous varieties.) 
Series IT. 
Prevailing color yellow; crown, - rump, and crissum with spots of rufous.; a 
band of the same on the side of the head, from bill (meeting both on forehead 
and on chin) around eye and over ear- coverts. 
6. D. eoa. Hab. Jamaica (Gosse). 
Group B. 
Base of primaries with white patch. 
Two white bands on wing . 
Series I 
No white bands on wing 
Series II. 
Base of primaries without white patch. 
' Rump yellow. 
Crown with a yellow spot 
Crown without a yellow spot 
. . Series IV. 
Rump not yellow. 
Throat white (with black streaks in striata and pharetrd) 
. . Series V. 
Throat yellow or orange . . . 
. . Series VI. 
Throat black, or mixed with black 
. . Series VII. 
Series I. 
7. D. olivacea. £. Head and neck, all round, fine light orange- 
rufous ; a broad black “ spectacle ” along side of the head. 9 • Head 
yellowish, dusky on top ; spectacle obsolete. Hab. Whole of Eastern 
Mexico; Guatemala. 
Series II. 
8. D. cserulescens. Head dark blue above and black underneath ; 
a black patch covering whole lateral and under side of head and lateral 
lower parts. Rest of upper parts dark blue; bases of primaries and 
