84 PACIFIC COAST AVIFAUNA No. 10 



17- Elanus leucurus (Vieillot). 



WHITE-TAILED KITE. 



Status The only definite record for Arizona is that of F. T. Pember, who 

 claimed to have met with the species near Gila Bend, in April (1892, p. 49). 



1 8. Buteo lineatus elegans Cassin. 



RED-BELLIED HAWK. 

 Synonym Buteo elegans. 



Status The only record of the occurrence of this species in Arizona is thc.t 

 of a specimen collected by Kennerly and Mollhausen on the Colorado Chiquito, 

 November 17, 1853 (Baird, 1858, p. 28). According to information received by 

 me from Mr. W. W. Cooke it is not now to be found in the National Museum 

 collection, although entered in the catalogue, with data as given above. Under 

 the circumstances the species may be excluded from the regular list until the oc- 

 currence can be confirmed. 



19. Xenopicus albolarvatus (Cassin). 



WHITE-HEADED WOODPECKER. 



Status The alleged occurrence of this species in the Santa Catalina Moun- 

 tains (Yisher, I9iob, p. 282) seems doubtful. 



20. Otocoris alpestris praticola Henshaw. 



PRAIRIE HORNED LARK. 



Status One specimen recorded from Fort Verde, in winter (Oberholser, 

 1902, p. 825). The possibility presents itself of this bird being an individual ex- 

 treme of some one of the several races regularly frequenting the region, or an inter- 

 grade between two of them, rather than belonging to the race to which it has 

 been referred. In treating slightly differentiated subspecies of such a variable 

 species it seems unsafe to assert such an extraordinary extension of range on such 

 slender evidence. 



21. Agelaius phoeniceus californicus Nelson. 



BICOLORED RED-WINGED BLACKBIRD. 



Synonym Agelaius gubernutor californicns. 



Status Straggling east to western Arizona (A. O. U. Check-List, 1910, p. 

 235). According to information received by me from Mr. W. W. Cooke, this 

 statement is based upon a specimen found dead July 6, 1907, by Mr. Vernon 

 Bailey, at Casa Grande. I ntergradation between this form and ncutralis has 

 been demonstrated, and the possibility suggests itself of the supposed specimen 

 of californicus being really an individual extreme of ncutralis, a common species 

 in the region. The occurrence of californicus, apparently a non-migratory form, 

 so far from the normal boundaries of its range, should receive the strongest pos- 

 sible verification. 



22. Wilsonia pusilla pusilla (Wilson). 



WILSON WARBLER. 



Status According to Ridgway (1902, p. 710) this species is "occasional 

 during migration in ... Arizona (Tucson, May: Fort Whipple, May)". 



