1911] Swarth: Alaska Expedition of 1909. 



67 



coverts, while some individuals evince a decided leaning toward 

 the characters of Dryobates v. picoideus. Such proclivities 

 cannot, however, be correlated with any particular region, the 

 picoideus-like examples not being necessarily found closest to 

 the range of that race. For the present at least, it seems best 

 to include all under the form harrisi. 



The specimens available in the present study are as follows : 

 ten from the 1909 Expedition, i.e., Calder Bay, Prince of Wales 

 Island, one (no. 9735) ; Egg Harbor, Coronation Island, one (no. 

 9734), "Rocky Bay," Dall Island, one (no. 9736) ; Etolin Island, 

 two (nos. 9739, 9740) ; Boca de Quadra, two (nos. 9737, 9738) ; 

 Wrangell Island, one (no. 9741) ; Admiralty Island, one (no. 

 9319) ; Chichagof Island, one (no. 10648) ; three from the 1907 

 expedition, all taken on Admiralty Island (nos. 462-464) ; one 

 from the Grinnell collection, collected at Sitka (no. 1246), and 

 two specimens of D. v. picoideus borrowed from the Biological 

 Survey collection, one from Skidegate, Queen Charlotte Islands 

 (no. 166821), the other (hardly typical of the form however) 

 from Kasaan Bay, Prince of Wales Island (no. 186243). 



Excluding the Queen Charlotte Island specimen, the individ- 

 uals showing the most marked smoky suffusion on the underparts 

 are from Admiralty and Chichagof islands, at the northern 

 extremity of the region, and from Dall Island, and Kasaan Bay, 

 Prince of Wales Island (the supposed D. v. picoideus), at the 

 south. Specimens with this tendency at a minimum, some being 

 nearly as white below as examples of hyloscopus, are from 

 Admiralty, Coronation, Prince of Wales, Etolin, Wrangell, and 

 Baranof islands, and from Boca de Quadra. 



The presence of conspicuous white spots on the lesser wing 

 coverts is also an unstable character, though such markings are 

 usually evident to some degree. Of two specimens collected at 

 Boca de Quadra, one (no. 9738) has conspicuously white-spotted 

 coverts, while on the other (no. 9737) there are no white spots at 

 all. The one specimen from Dall Island (no. 9736) shows an 

 inclination toward the characters of picoideus, evidenced by the 

 restricted area of the white dorsal stripe, together with slight 

 barrings on the back aoid flanks; but the same peculiarities are 

 evident to an even greater degree in one from Admiralty Island 



