BIRDS OF NORTH AND MIDDLE AMERICA. 247 
St. Matthews, and St. Lawrence islands),—Barrp, Brewer, and Ripeway, 
Water Birds N. Am., i, 1884, 222.—Stnsneaer, Bull. U.S. Nat. Mus., no. 29, 
1885, 112, in text (does not occur on Commander Islands).—McGrecor, 
Condor, viii, 1906, 119 (Unimak Island, Aug. 4; Tigalda Island, Aug. 5). 
[Arquatella] ptilocnemis SHarPx, Hand-list, i, 1899, 164.—Forses and Rosinson, 
Bull. Liverp. Mus., ii, no. 2, 1899, 7 
Tringa maritima ptiloenemis SerBoum, Geog. Distr. Charadr., 1887, pp. xxv, 
421.—Euuiot, N. Am. Shore Birds, 1895, 73, pl. 18. 
Tringa maritima ptilocnemys Exvtiot, N. Am. Shore Birds, 1895, 235. 
Arquatella maritima ptilocnemis AMERICAN ORNITHOLOGISTS’ UNIon CoMMITTEE, 
Auk., xxv, July, 1908, 366; Check List. 3rd ed., 1910, 113. 
[Arquatella maritima.] Subsp. 8. Arquatella ptilocnemis Suarre, Cat. Birds 
Br't. Mus., xxiv, 1896, 584. 
Tringa gracilis Hartine, Proc. Zool. Soc. Lond., xlii, April, 1874, 242, pl. 40, 
figs. 4-6 (St. Paul Island, Pribilof group, Alaska; coll. Brit. Mus.). 
ARQUATELLA PTILOCNEMIS COUESI (Ridgway). 
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—Wing, 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. 
Ex- 
Locality. Wing. | Tail. | Posed | parsus.| Middle 
men. 
MALES. 
One adult male from Muller Bay, Alaska Peninsula........... 123.5 57 26 23 23.5 
Four adult males from Morzhovoi Bay, Alaska Peninsula. ..... 121 57.4 27.9 22.7 22.9 
One adult male from Sannak Island...............-2--22------ 122 56 27 23.5 3 
Three adult males from Atka Isiand...................-.2-.--:] 114 53 25.8 22 21.5 
One adult male from Adak Island.................-22.2.-242-- 116 56 25 22 22 
Four adult males from Tanaga Island.............-.-----+-.-- 113 51.7 26. 4 22.2 22.5 
Four adult males from Kiska Island....................--2-+-- 114 52.1 24.7 22.1 22. 2 
One adult male from Agattu Island......-.............-.--+-- 119 55 28 23 23 
Five adult males from Attu Island. .............2-.....2--20-- 116.7 55.3 26.3 23 23.6 
Three adult males from Bering Island, Kamchatka............ 118.3 54.8 25.5 22.5 22.8 
Four adult males from St. Michael...-..............-.---22--- 120.4 54.4 26.9 22.4 21.4 
One adult malefrom Kings Cove.....-......2---22--22 2-02-02 119 54 27.5 22.5 22.5 
