66 NOETH AMEKICAN FAUNA. [no. 19. 



but none about the ])oik1s in the interior of the islund or on the salt 

 meadow behind the town. Out of eighty specimens taken only eight 

 were adults, and five of these were taken })efore September 1). On the 

 rocky shores of a point opposite Dutch Harbor, Unalaska, I found 

 them common October 5. Those taken at St. Michael were molting 

 into first winter phunage, which is practically complete in the Una- 

 laska birds. In this plumage there is considerable individual differ- 

 ence in the width and shade of the pale edgings of the feathers of the 

 upperparts. 



The irides were Vandyke brown; bill, black changing to olive buff' 

 in basal half; tarsi and toes, yellowish olive buff washed with black; 

 nails black. 



I find great sexual variations in size in this species, the females, as 

 in many other species of Limicolie, averaging considerably larger, 

 especially in length of bill. Measurements of twenty-nine males: 

 Length 8. OB to 8.94 (average 8.67) inches; wing 4.37 to 5.12 (average 

 4.89) inches; exposed culmen 0.96 to 1.13 (average 1.06) inches; tar- 

 sus 0.91- to 1.03 (average 0.96) inches. Measurements of thirty-four 

 females: Length 8.56 to 9.56 (average 9.03) inches; Aving 4.47 to 5.31 

 (average 4.98) inches; exposed culmen 1.16 to 1.42 (average 1.24) 

 inches; tarsus 0.96 to 1.05 (average 0.99) inches. 



51. Tringa ptilocnemis. Pribilof Sandpiper. 



We saw a number on St. George October 3, but too close to the 

 rookery of fur seals to be obtained. 



52. Tringa acuminata. Sharp-tailed Sandpiper. 



First found September 18, when six were seen with a large flock 

 of T. a. pacijica at St Michael. We did not see liiore than a dozen 

 of this species during the rest of September. Although the species 

 has not been hitherto recorded from St. George Island, we took three 

 and saw about a dozen during the short time we were there October 3. 

 At Unalaska, October 5, I secured one which was with T. couesi on 

 the rocky beach. The irides were Vandyke brown; maxilla and distal 

 half of mandible, dark seal brown, mandible changing to dull olive buff 

 at base; gape ecru drab; tarsi and toes, greenish maize yellow; nails 

 black. 



53. Tringa maculata. Pectoral Sandpiper. 



This species was present throughout our stay at St. Michael, usually 

 associating with flocks of T. a. pacifica^ but in very small numbers, 

 not more than twenty being seen. All the specimens taken were 

 young birds. Osgood took one at St. George October 3, and 1 one at 

 Unalaska October 5. 



