QQ PROCEEDINGS OF THE NATIONAL UUSEUM. vol.38. 



O m . of my males from Qnalaska has the feathers of the rump 

 lipped with rusty (Ma} 27, 1906). Two of the females in my collec- 

 tion have considerable rusty on the rump, and all some on the scap- 

 ular-. All the males have black bills. The females have dusky bills, 



excepl one from Attn, which has the mandible except the tip yellow. 

 On June 9, at Attn. I t'onnd a nest of this species, wit h four eggs. 

 1 1 was in a recess under a large bowlder, about a foot from the open- 

 in--, which was almost completely hidden by a large tuft of grass. It 

 was situated on the beach to the right of the harbor entrance, not 

 much above high-water mark. The male was Hushed from the nest 

 and secured. 



CALCARIUS LAPPONICUS ALASCENSIS Ridgway. 

 ALASKAN LONGSPUR. 



The Longspur is the mosl abundant bird throughout the Aleutian 

 and Commander islands. Although occurring everywhere except in 

 the highest altitude-, it is most common on the lower levels. Besides 

 the Song Sparrow ( Melospiza I this w as th dy small bird I found on 



attu. 



Birds from the Aleutian Islands appear to average rather more 

 brilliant in coloration than those from the mainland, the difference, 

 how ever, being very slight. Aleutian specimens show a slight average 

 tendency toward deeper colors toward the western part of the chain, 

 no! , however, approaching in richness of coloration G. I. coloratus of 

 the ( lommander Islands. 



Measurements of forty-seven specimens from the Aleutian and Com- 

 mander islands show a tendency toward increased size at the western 

 end of the chain and on the Commander Island-, the smallest birds 

 coming from Unalaska, and the largesl from Bering Island. The 

 Commander [sland birds, although bearing the same relation in size 

 to birds from Attu and Agattu as birds from these islands.do to others 

 from Atka, are markedly different in color; and it is interesting to 

 note that, while Commander Island birds are in size just what we 

 should expect did G. I. alascanus occur there, the color is wholly 

 different. 



Aleutian specimens of C. I. alascanus are somewhat larger than 

 continental birds. 



CALCARIUS LAPPONICUS COLORATUS Ridgway. 

 COMMANDER ISLAND LONGSPUR. TSCHELUTSCHJEK. 



This form is very common on the Commander [slants. Besides 

 differing greatly in color, especially the female-, from Aleutian birds, 

 there is a decided difference in the note-; in addition to the regular 

 song, which is the same as with G. I. alascanus, they have another 

 consisting of three somewhat whistling notes, very clear and sweet. 



Nineteen specimens from ( !opper and Bering islands show very little 

 individual variation in color. 



