346 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



striped with brownish black, about as in B. obsoletKs ; wing-coverts dull 

 chestnut-brown, tinged with olive, the exterior feathers more rusty; 

 supra-loral stripe light cinnamon, the feathers white at base; lores, con- 

 tinuous with a broad stripe behind the eye, dull grayish brown ; under 

 eyelid whitish; malar region, cheeks, entire foreneck, jugulum, and 

 breast rich cinnamon, much deeper than in any of the allied forms; chin 

 white, throat mixed white and cinnamon, the latter on tips of the 

 feathers; entire sides and flanks rather dark hair-brown (less olivaceous 

 than upper parts), rather distinctly barred with blackish and very 

 sharply barred with pure white, the bars of the latter color about .05- 

 .07 of an inch in width ; lining of wing dark brown, with very narrow 

 white bars; anterior and middle portion of crissum marked much like 

 the flanks, the lateral and terminal lower tail-coverts pure white. 

 Basal two-thirds of the mandible, and posterior portion of maxillary 

 toraium deep orange; rest of bill dark horn-brown, the end of the man- 

 dible paler; feet dark horn-brown. Wing 5.70, tail 2.50, culmen 2.15, 

 depth of bill at base .50, in middle .30; tarsus 1.92, middle toe 1.80. 



Compared with specimens of all the allied species and races of the 

 genus, the present bird is instantly distinguishable by the characters 

 ponited out above. In intensity of coloration it most nearly resembles R. 

 virginianiis ; but, apart from its much larger size, presents the following 

 differences of coloration: The side of the head below the eye is chiefly 

 cinnamon, whereas this portion is in R. virginianus very distinctly ashy; 

 the breast, etc., are both deeper and redder cinnamon; the ground-color 

 of the sides and flanks much paler (uniform black in virginianus)', the 

 black stripes of the upper parts are both narrower and less sharply de- 

 fined, while the wings are much less rusty. 



Compared with the larger species {R. longirostris, with its races, R. 

 elegans and R. obsoletus), it is difficult to say to which it is most nearly 

 related. None of the forms of R. longirostna, however, need close com- 

 parison, the darkest colored race of that species {saturatuSj from Loui- 

 siana) having broader black strii)es and a very different (ash-gray) 

 ground-color above; the breast, &c., a very much duller and lighter 

 cinnamon, and the flank-bars broader and on a uniform ground-color. 

 R. obsokfus agrees best in the coloration of the upper parts, which, how- 

 ever, in all specimens (including one from San Quentin Bay, on the west- 

 ern side of Lower California) have a lighter, and in some a decidedly 

 grayer, ground-color; but the white flank-bars are much broader, with 

 unicolored interspaces, the breast very conspicuously i)aler, and the size 

 considerably greater. R. elegans has also the breast paler, the ground- 

 color of the upper parts a lighter and much more yellowish olive, and 

 the black stripes much more sharply defined. U])on the whole, I see no 

 other way than to consider the specimen in question as representing a 

 very distinct species or local race, which I take great pleasure in naming 

 after its collector. 



