° 1914 ] Taverner, New Subspecies of Dendragapus. 



387 



Under tail coverts dusky neutral gray or black with prominent white 

 shaft Unes and final borders. White increasing towards base of tail untU 

 body color of feathers is hidden. 



Head from deep neutral gray to neutral gray darkest on crown and ear 

 coverts, overwashed with rusty ^ strongest on forehead at base of bill and 

 more or less obscuring body colors of darker feathers and at last dying 

 away at back and sides of upper neck as a faint olivaceous ^ tinge. 



Throat patch, white with irregular deep neutral gray spotting, aggre- 

 gated on malar region and each spotted feather terminated with small 

 white border. 



Lores, deep neutral gi'ay, with w^hite flecking. 



Dark feathers of the breast band creamy white basaUy, the white grad- 

 ually encroaching on the dark tips towards the sides, finally usurping most 

 of the feather and making a semi-concealed white streak down the sides of 

 the neck to the bend of the folded wing. 



The characters of the female are less marked than of the male and 

 without series for comparison may be difficult of recognition. However, 

 they average in the same directions as the male being bluer underneath 

 than richardsoni and darker dorsally, with the rufous ^ or rusty ^ markings 

 bolder and more decided in character. 



Measurements (in inches). Male, average of four specimens. 



Wing, 8.25-8.75, (average 8.51); tail, 6.5-6.75 (average 6.33); tarsus, 

 1.70-1.80 (average 1.75); exposed cuhnen, .65-.7o (average .71). 



Female average of twelve specimens. 



Wing, 7.45-8.10 (average 7.70); tail, 5.10-5.75 (average 5.25); tarsal 

 1.48-1.68 (average 1.55); exposed culmen, .65-.71 (average .69). 



Distribution. This description is based entirely on specimens taken 

 within thirty miles of Teshn Lake, on the boundary between British Colum- 

 bia and Yukon Territory, Longitude 130°-30', at the west base of the Cassiar 

 Mountains. The range of the form cannot therefore be defined, but a 

 study of the material examined is suggestive. 



The male specimens in the series are as follows: — British Columbia: 

 Trail, Midway and Revelstoke: 7 specimens. 



Montana and Idaho: Preuss Mts., Fiddle Creek; and Nyak and Bear- 

 tooth Mts.: 4 specimens. 



Mackenzie; Mackenzie River: 1 specimen. 



Yukon Territory, TesUn Lake: 4 specimens. 



1 These terms are not from Ridgway's "Color Standards." 



