jSgi.J Brewster, i)escriptio?is of Nctv thirds. tA? 



as in arcticus. The tcmalc is very like that of the Ibnn last men- 

 tioned, instead of being nearly as dark as the male, as is the case 

 with the female of mcgalonyx. Only two of my seventeen males 

 have the back black, the feathers of this part in all the others be- 

 ing more or less broadly edged with brownish or olivaceons. 

 Both males and females have the bill nniformly mnch larger and 

 stouter than in any of my specimens of the allied forms from the 

 United States. Some of the peculiarities just mentioned, includ- 

 ing the heavy bill, can be very closely matched in a series of 

 breeding specimens from the mountains of Chihuahua, Mexico, 

 but none of the latter are as pale on the flanks and sides. Mr. 

 Ridgway, who has examined these Chihuahuan birds, pronounces 

 them to be intermediate between mcgalo7iyx and maculatus. The 

 Lower California examples might be similarly disposed of, but in 

 view of their isolated habitat and the fact that they exhibit a covi- 

 biiiatioji of characters unlike that of any form hitherto recognized 

 and fairly constant, I have thought them entitled to subspeciflc 

 separation. 



The orange rufous streaking on the crown of the female above 

 described is found on several other birds (all females) in my 

 series and on one or two constitutes a conspicuous and rather orna- 

 mental marking. As it is wholly lacking on many Lower Cali- 

 fornia birds it cannot be taken as a diagnostic character, although 

 I find no trace of it in any of the other forms of the macula- 

 ttis group. 



Vireo solitarius lucasanus, new subspecies. St. Lucas 

 Solitary Vikeo. 



SuBSPEC. CHAR. — Smaller than V. .<;. cas$iiiii, but with the bill (actually, as 

 well as relatively) longer and stouter, the sides and flanks much yellower. 

 Young in autumn without brownish beneath, and closely resembling the 

 young o{ solitarius. 



Male. ad. (No. 15,504, collection of William Brewster, San Jose del 

 Rancho, Lower California, July 15, 1887; M. Abbott Frazar). Top and 

 sides of head and middle of the back dusky ashy ; remainder of the upper 

 parts, including the outer edges of the wing- and tail-feathers, dull olive 

 green; secondaries and greater and middle wing-coverts tipped with 

 brownish white; all the wing quills edged internally with the same; 

 inner webs of the outer tail-feathers narrowly edged with white ; under 

 tail-coverts nearly white; bend of wing brownish white; flanks and sides 



