COLLURIO 439 
A. Black cheek-stripes involving eyelid only on upper border 
of eye, and not meeting across the forehead. A crescentic 
patch of white in the black, beiow the eye; upper edge 
of black stripe behind the eye bordered by hoary wnit- 
ish. Breast and belly always with distinct, transverse 
waved lines of dusky. Bill, when mature, entirely black. 
Length about 10 inches. is 
Above light ash, Upper tail coverts and forehead much 
paler than the back, the former without waved 
lines. Axillars whitish. 
Inner webs of secondaries paler towards edges, 
but not of well-defined white. Concealed 
bases of tail feathers, except sixth, white. 
Tarsus shorter than the gape of mouth . borealis. 
B. Black cheek-stripes not involving upper border of eye or 
upper eyelid, which is whitish, and not meeting across 
the forehead, its upper edge behind the eye with scarcely 
a lighter border. No patch of white on lower eyelid. 
Under parts unvaried white; in female obscurely waved. 
Base of under mandible whitish. Length about 9 inches. 
Above light ash. Upper tail coverts and forehead de- 
cidedly paler than the back. Axillars whitish. 
Inner webs of all secondaries (except innermost) 
white to shaft, except for less than terminal ’ 
half, which is black along the shaft. Con- 
cealed base of tail white, except on sixth 
feather. Tarsus equal tothe gape. - excubitor 
C. Black cheek-stripes involving upper eyelid, as in A, but 
without patch of white below the eye; meeting in a nar- 
row, sometimes inconspicuous line across the forehead, 
its upper edge behind the eye not bordered by lighter. 
Beneath plain white, or very obscurely waved in ludovici- 
anus (the female?). Bill, when mature, entigely black. 
Length about 8.50 inches. 
Above dark plumbeous-ash. Upper tail coverts and 
forehead scarcely paler than the back. Sides and 
breast tinged with bluish-gray. 
Black of loral space rather hoary alang upper 
border. Frontal dark line inappreciable or 
wanting. Inner webs of secondaries paler 
only along the marginal half, and not ab- 
ruptly white. Axillars plumbeous. Tail 
feathers, except the innermost, with a con- 
cealed well-defined white patch at base, 
largest on the more exterior one. Bill from 
nostril, .50. Under parts often with very 
obscure faint waved lines (in the female ?). 
White patch on wing reaching about to 
middle of lst primary. Tarsus equal tothe 
gape . ; ; 4 é A 2 - ludovicianus. | 
