■^'914^] THAYER AND BANGS — BIRDS 43 



MEASUREMENTS (ill millimeters). 



Anthus cervinus (Pallas). 



Two adults, male and female, were obtained at the Delta 

 of Kolyma, June 25, 1912, and Cape Bolshaja Baranov, July 16, 

 1912. 



No nests of the red-throated pipit were found; and though widely 

 distributed on the Arctic coast of East Siberia, the bird appeared 

 to be rare, less than half a dozen individuals being seen. 



Alaudidae. 



Otocorys alpestris euroa subsp. nov. 



Six adult males were taken at Nijni Kolymsk, May 14 and 15, 

 1912. 



The shore lark was abundant in large flocks at Kolyma through- 

 out the latter part of May, after which they all disappeared, and 

 the species was not seen again. Neither was it observed at any 

 other point on the Arctic coast of Siberia. Probably these birds 

 retreat to high, dry, rather inland tundra to breed. 



These examples were all in breeding plumage, with the black 

 crescent and head markings pure black. The throats of all are very 

 pale 3^ellow, paler than is usual in 0. a. alpestris killed on approxi- 

 mately corresponding dates. The throat of alpestris, however, 

 becomes paler as the season advances. In color of the nape, rump, 

 and bend of the wing, and in size also, these skins are very close 

 to Otocorys alpestris alpestris, but though much like them, they can 



