272 NORTH AMERICAN BIRDS. 



B> No wliito on wing or tail; lower parts deep blue. 



C. stelleri. Color deep blue, less intense than on wings and tail, ex- 

 cept dorsal region, which may be deep blue, ashy-brown, or sooty- 

 black. Head and neck dark grayish-brown, dusky-blue, or deep 

 black, the throat more grayish. 



a. No while patch over the eye ; throat and chin not abruptly 

 lighter than adjacent parts; secondary coverts not barred with 

 black. 



Whole head, neck, jugulum, and dorsal region plain sooty- 

 black ; no blue streaks on forehead, or else these only faintly 

 indicated. The blue everywliere of a uniform duU greenish- 

 indigo shade. Depth of bill, .45; crest, 2. GO; wing, 6.00; 

 tail, 6.00; culmen, 1.35; tarsus, 1.75; middle toe, 1.00. Hah. 

 Northwest coast, from Sitka to the Columbia . var. siellert. 



^Vhole head, neck, jugulum, and dorsal region plumbeous- 

 umber ; the forehead conspicuously streaked with blue, and 

 the crest washed with the same. The blue of two very 

 different shades, the wings and tail being deep indigo, the 

 body and tail-coverts greenish cobalt-blue. Depth of bill, 

 .35 ; crest, 2.80 ; wing, 6.00 ; tail, 6.00 ; culmen, 1.25 ; tarsus, 

 1.55 ; middle toe, .90. Hab. Sierra Nevada, from Fort Crook 



to Fort Tejon \aT. frontal in. 



h. A patch of silky white over the eye ; throat and chin abruptly 

 lighter than the adjoining parts; secondary coverts barred dis- 

 tinctly with black. 



Whole crest, cheeks, and foreneck deep black ; the crest 

 scarcely tinged with blue ; dorsal region light ashy-plumbeous ; 

 forehead conspicuously streaked with milk-white. The blue 

 contrasted as in \a.v. fronialis. Depth of bill, .35 ; crest, 3.00; 

 wing, 6.10; tail, 6.10 ; culmen, 1.25; tarsus, 1.65; middle toe, 

 .90. Hah. Rocky Mountains of United States var. macrolopha. 



Whole crest, cheeks, and foreneck deep black, the crest 

 strongly tinged with blue ; dorsal region greenish plumbeous- 

 blue. The blue nearly uniform ; forehead conspicuously 

 streaked with bluish-white. Depth of bill, .35 ; crest, 2.80 ; 

 wing, 5.90 ; tail, 5.90 ; culmen, 1.30; tarsus, 1.00; middle toe, 

 .90. Hah. Highlands of Mexico . . . var. diademata.' 

 Whole crest, cheeks, and foreneck deep blue, lores black ; 

 dorsal region deep purplish-blue ; forehead conspicuously 

 streaked with light. blue. The blue of a uniform shade — 

 deep purplish-indigo — throughout. Depth of bill, .40; length 

 of crest, 2.50 ; wing, 5.80 ; tail, 5.80 ; culmen, 1.30 ; tarsus, 

 1.60; middle toe, .95. Hab. Southeastern Mexico (Xalapa, 

 Belize, etc.) ....... var. coronafa.' 



The different varieties just indicated under Cyanura stelleri, namely, stel- 

 leri, frontalis, macrolopha, diademata, and coronata, all appear to represent 



J Cijannra diademata (Bonap.), Cijnnngarrnlns dutdemntus, Bon'ap. Con.^p. p. 377. Cynno- 

 citla diad., Sclater, Catal. Am. B. 1S62, 143. The C galeata. Cab., from Bogota, we have not 

 seen. 



'^ Cyanura coronata, Swaiss. Phil. Mag. I, ls27, 437. 



