122 



U. S. p. E. K, EXP. AND .SURVEYS — ZOOLOGY — GENERAL REPORT. 



List of specimens. 



COL APTES HYBEIDUS, B a i r d . 



Colaptes ayresii, Ano. Birds Am. VII, 1843, 348 ; pi. 494. 



? Ueopicus chnjsoides, Malhekue, Rev. et. Mug. Zuul. IV, I85'i, 553. (Diflcr.s from C. rmcadi.'i in wanting red iiapo ) 



Sp Ch. — Yellow sli.'iftH or feathers on wing and tail combined witli red or red spotted clicek patches. Orange shafts coinhlned 

 with a well defined nuchal red crescent. Ash colored throat combined with black cheek patch, or yellow shafts. Shafts and 

 feathers intermediate between gamboge yellow and dark orange red. 



By tlie above name 1 intend to cover a remarkable .series of woudpecker.s I'roiu tlie upjier 

 Missouri and Yellowstone, combining the characteristics of the Colaptes auratus and mexicanus 

 in i)roportions varying with almost each individual, and leading irresistibly to the conclusion 

 that they are descendants of originals of the species mentioned above, mi.\ed up by inter- 

 breeding of successive geueratlDiis, to a degree unparalleled in the annals of ornitli(dogy. 1 

 have, in tlie two preceediug articles, gone into much detail in respect to the characters of 

 ColaptnH auratus and mexicanus, and under the first named liead have shown the jiartieular 

 point of difl'erence. 



