142 BIRDS OF THE COMMANDER ISLANDS. 



PICOIDE^. 



110 (,l"^r . Dryobates punis Stkjn. 2M. 



Occasionally straggling to Bering Island, where I obtained three speci- 

 mens, two males and one female.* 



PASSEROIDE^. 



111 (i:«). Alauda blakistoni Stejn. 234. 



Apparently a regnlar summer visitor to Bering Island, where a few 

 pairs probably breed. 



112 (1%). Corvus behringianus (Dybcav. ) 237. 



An all-year resident on both islands, and apparently peculiar to them, 



113 (136). Corvus corone levaillantii (Less.) 239. 

 A rare straggler irom the mainland. 



114 {I'i'^). Hypocentor aureolus (Pall.) 244 



Visits Bering Island occasionally during the spring migration. 



115 (139). Hypocentor rusticus (Pall.) 246. 

 Like the foregoing. 



116 (140). Hypocentor variabilis (Temm. & Schl.) 247. 



Only a rare straggler from the mainland. The only specimen known 

 from the islands is an adult male, collected by me on Bering Island, 

 June 11, 1883. 



117 (142). Plectrophenax nivalis (Lix.) 248. 

 Resident, but not numerous in winter. 



118 (143). Calcarius lapponicus (Lin.) 250. 



Summer visitor. Very common on both islands. 



119(144). Acanthis linaria (Lix.)252. 



Winter visitor only; during that season it was the most common of 

 the three Redpolls; it was not met with from the end of May until the 

 beginning of November. 



120 (145). Acanthis linaria holboellii (Brehm) 256. 



Apparently resident; is the only form breeding on the islands. 



121 (146). Acanthis hornemannii exilipes (Coues) 258. 

 Winter visitor only. 



122 (148). Leucosticte griseonucha (Brandt) 261. 



Resident on both islands, though much more common on Copper 

 Island. • 



* Dyb. & Taczan., " Liste," &c., give Micropus pacificus as occurring on both islands. 

 It is sufficient to refer to the fact that Dr. Dyb., in his former report, only mentions 

 the species from Kamtschatka with a query. No specimens appear to have been 

 taken, and on the islands this species has never been observed. 



