67 [Vol. xlii. 



bands o£ greyish white, instead o£ slate-grey as in F. c. 

 columbarius ; below as dark and heavily striped as in 

 F, c. columbarius ; thighs ru£ous-buff, much darker than 

 in F. c. ricliardsoni ; ? similar to that of F. c. nchardsoni 

 above, but a shade darker brown ; below as dark as F. c. 

 columbarius. In the series these differences are very notice- 

 able, and the bird is, o£ course, quite different to F. c. suckleyi,, 

 the more northern coastal form. 



Type. S , Fort Walla Walla, Washington State, 18 Oct., 

 1881; Capt. Bendire, No. 7687, Mus. Comp. Zool., Harvard. 



I also found some interesting forms of Urubitinga here, 

 including Urubitinga gundlacM from Cuba, which proved to 

 be a perfectly good and distinct species, and, on a comparison 

 of Spizaetus ornatus with S. tyrannus, I found, as suggested 

 by Mr. Sclater, that the latter was only the black phase of 

 the former. 



Next I went down to Washington, where I spent about a 

 week at the U.S. Nat. Mus., and received the same kind 

 attention from Messrs. Richmond, Oberholser, Wetmore, 

 Riley, and others, and also from Dr. Palmer, secretary of 

 the A. 0. U. This Museum contains, on the whole, the best 

 collection in North America, although in the case of certain 

 Accipitres, as might be expected, I found it could be beaten 

 by the other museums. Here I finished my examination of 

 the American Gyrfalcons, and came to the conclusion that 

 the dark Alaskan race, of which there was a good series, 

 was not identifiable with any of the Old World forms and 

 constituted a second form for North America. This Alaskan 

 race, the F. sacer of Ridgway, the F. islandus of Newton, 

 the F. gyrfalco of Sharpe, Dresser, and Brewster, has figured 

 under various names, but has no correct name of its own, so 

 I propose to rename it : — 



Falco rusticolus alascanus, subsp. nov. 



Dark race ; appreciably smaller and darker than F. r. 

 islandus or F. r. uralensis ; slightly smaller than F. r. rusti- 

 colus, darker above and with the bars on wing-coverts and 

 secondaries rather whiter and wider. Wing, ^ , 340-358, 

 tail 210 ; wing, ? , 386-400, tail 220-230 ; wing, i type, 

 400 mm. ; above blackish slate, barred and edged with pale 



