214 Hentshaw o?i P. occidental is and P. clarkii. 



scapulars with a slight chalky cast, showing, however, only in certain 

 lights; terminal borders of the tertials, secondaries and shorter primaries 

 smoky brownish, and secondaries more brownish than the general surface; 

 outer surface of wing showing no indication of bars, except exceedingly 

 faint ones on the secondaries, discernible only on close inspection. Tail 

 grayish-brown (the intermedia? more grayish), narrowly bordered at 

 extreme tip with paler grayish, crossed with a well-defined subterminal band 

 of black nearly one inch wide, and with about six narrow, irregular bands 

 of the same, broken on the intermedia; into irregular spots; under sur- 

 face of the tail light silvery-gray (appearing hoary-white in some lights) 

 relieved by a distinct subterminal band of dusky, and, anterior to this, by 

 another less distinct, narrower, and more grayish band, the others being 

 concealed by the lower coverts. Under surface of the primaries with the 

 broad portion of the quills chiefly white, but this more or less broken, 

 chiefly on the inner quills, by a grayish clouding, tending to form regular 

 broad bars when the quills are separated; lining of the wing and nar- 

 rowed portion of the quills uniform black. 



Wing, 13.10; tail, 7.50; oilmen, .85; tarsus, 2.50 (the unfeathered 

 portion in front 1. 50, and with 10 large transverse scuta?) ; middle 

 toe. [.55. 



The specimens of this species in the U. S. National Museum 

 are from the following localities: Oyster Bay, Western Florida 

 (Jan. 28, 1SS1 ; W. S. Crawford) ; Mirador, Mazatlan, and 

 Tehnantepec. Mexico ; La Palma, Costa Rica, and Brazil (Sr. 



Albuquerque). 



OX POD ICE PS OCCIDENTALIS AND 

 P. CLARKII. 



BY H. W. HENSIIAW. 



By at least one author* the specific distinctness of our two 

 largest Grebes. P. occidentalis et clarkii, has been denied and 

 clarkii formally reduced to varietal rank. Since, however, this 

 view of the relationship of the two seems not to be fully ac- 

 cepted,! an d inasmuch as recently I have examined an unusually 



* Cones in Birds of the Northwest, p. 128. 



t Mr. Ridgway in the recent " Check List of North American Birds " nar es them 

 as full species. 



