BIRDS OF NORTH AXD MIDDLE AMERICA. 



247 



St. Matthews, and St. Lawrence islands). — Baird, Brewer, and Ridgway, 

 Water Birds N. Am., i, 1884, 222.— Stejneger, Bull. U. S. Nat. Mus., no. 29, 

 1885, 112, in text (does not occur on Commander Islands). — McGregor, 

 Condor, viii, 1906, 119 (Unimak Island, Aug. 4; Tigalda Island, Aug. 5). 



[Arqunlella] ptilocnemis Sharps, Hand-list, i, 1899, 164. — Forbes and Robinson, 

 Bull. Liverp. >Ins., ii, no. 2, 1899, 73. 



Tn'nga marUinui ptilocnemis Seebohm, Geog. Distr. Charadr., 1887, pp. xxv, 

 421.— Eluot, X. Am. Shore Birds, 1895, 73, pi. 18. 



Tringa maritiina ptilocnemys Elliot, N. Am. Shore Birds, 1895, 235. 



Arquatella maritima ptilocnemis American Ornithologists' Union CoMiinTEE, 

 Auk., xxv, July, 1908, 366; Check List. 3rd ed., 1910, 113. 



[Arquatella maritima.] Subsp. |8. Arquatella ptilocnemis Sharpe, Cat. Binis 

 Br'.t. Mus., xxiv, 1896. 584. 



Tringa gracilis Harting, Proc. Zool. Soc. Lend., xlii, April, 1874, 242, pi. 40. 

 figs. 4-6 (St. Paul Island, Pribilof group, Alaska; coll. Brit. Mus.). 



ARQUATELLA PTILOCNEMIS COUESI (Ridgway j. 



ALEUTIAN SANDPIPER. 



Similar to A. p. ptilocnemis but decidedly smaller and much darker 

 in color; the summer plumage with blackish and rusty or cinnamon- 

 rufous predominating on back and scapulars, and all the colors much 

 darker and more extended. Very similar in winter plumage to A. 

 maritima, but summer plumage and young very different, both being 

 conspicuously marked with rusty on back and scapulars, and the 

 summer plumage with breast conspicuously blotched or clouded with 

 dusky. 



Adult male.— Wmg, 108-123.5 (117.6); tail, 46-59 (54.4); exposed 

 culmen, 23-30 (26.3); tarsus, 21-24 (22.5); middle toe, 19-24 (22.5).° 



Adult female. —Wing, 112.5-129 (120.2); tail, 48-60 (55.2); exposed 

 culmen, 26.5-34 (29.6); tarsus, 21.5-24 (22.9); middle toe, 21.5-25 

 (23.3).^ 



« Thirty-two specimens. 



& Thirty specimens. 



Locality. 



MALES. 



Oue adult male from Muller Bay, -Vlaska Peniasula 



Four ailr.lt males from Morzhovoi Bay, Alaska Peninsula. 



One adult male from Sannak Island 



Three adult males from Atka Island 



One adult male from Adak Island 



Four adult males from Tanaga Island 



Four adult males from Kiska Island 



One adult male from .\gattu Island 



Five adult males from Attu Island 



Three adult males from Bering Island, Kamchatka 



Four adult males from St. Michael 



One adult male from Kings Cove. 



Middle 

 toe. 



23.5 



22.9 



23 



21.5 



22 



22.5 



22.2 



23 



23.6 



22.8 



21.4 



22.5 



