aves falconid^. 663 



General description. 



Size. — Adult male. P. U. O. C. No. 7946. Rio Chico de Santa Cruz, 

 Patagonia, 11 March, 1898. A. E. Colburn, collector. Or. No. 296. 



Total length, 14.50 inches. 



Wing, 9.75 inches. 



Culmen, without cere, 0.70 inches; with cere, 0.95 inches. 



Tail, 7.10 inches. 



Tarsus, 1.85 inches. 



Adult female. P. U. O. C. No. 7900. Near Coy Inlet, Patagonia, 21 

 November, 1896, J. B. Hatcher. Or. No. 278. 



Length, 17.00. Wing, 11.40. Culmen, without cere, G.80; with cere, 1. 10. 



Tail, 7.80 (the tips are worn). Tarsus, 2.00. 



Fig. 339. 



Falco fusco-ceenilescctis. Adult male. P. U. O. C. 7946. Natural size. 



Color. — Adult male cited. 



General color, above slate-blue, lead in tone ; beneath, tawny rufous, with 

 a black area on either side, which meet on the chest. 



Head ; Forehead narrowly white and a white triangular spot in front 

 of the eye ; crown deep slate-blue, each feather with a median black line ; 

 a stripe beginning over the eye reaches back and is confluent with the 

 stripe of the opposite side, on the nape ; this begins as a pure white stripe 

 but is almost at once shaded with creamy, becoming deep buff, even 

 tawny, on the sides of the head and nape ; a post-ocular stripe, wider 

 than the light stripe, defines it, being deep lead-slate in color ; this band 

 crosses the upper margin of the ear-coverts ; the lower part of the ear- 



