292 Mr. G. E. H. Barrett-llamilton on 



having used my information, and quoted my authority for 

 the redness of the legs. Dr. Stejneger has not given us the 

 colour of the legs of immature birds, l)ut it would seem from 

 ray note that the legs become deeper red as the bird grows 

 older, until, in the adult, the red is so deep that they dry to 

 black in i)reserved specimens. 



Stekcorarius parasiticus. [S. crkpidatus.] 

 No. 17. (?*(!) of light form, Karaginski Island, August 22, 

 1897. Colour of soft parts black, except the fleshy base of 

 the bill. 



H^MATOPUS OSCULANS SwiuhoC. 



No. 18. Petropavlovsk [Mr. Jacobleff). 



Arenaria interpres (Linn.). [Strepsilas interpres.] 

 No. 19. Sexed ^ , Petropavlovsk, August 28, 1897. 

 Nos. 20-21. S (') 'iiifl oiie unsexed^ Karaginski Island, 



August 22 or 23, 1897. Colour of legs yellowish red. 



No. 22. ? , Karaga Village, August 21, 1897. Colour 



of bill horn; of iris and claws dark ; of legs salmon-yellow. 



^^GiALiTis mongola (Pallas). 



No. 23. ? (!), Karaga Village, August 21, 1897. Colour 

 of bill black; iris and claws dark; legs and feet greenish. 



ACTODROAIAS RUFICOLLIS (Pallas). 



Nos. 24-29. 2S [\), 4? (!), Karaga Village, August 21, 

 1897. Colour of bill and legs black. 



No. 30. ? (!), Karaginski Island, August 22 or 23, 1897. 

 Colour of bill and legs black. 



Terekia cinerea (Giildenst,). 

 Nos. 31-32. S CO and one unsexed, Karaginski Island, 

 August 22 or 23, 1897. Colour of legs yellow. Dr. Stej- 

 peger^s only specimen of this bird was obtained on Bering 

 Island. 



* The sign (!)is added to specimens which I skinned and sexed myself. 

 It throws no doubt on the sexing of specimens not thus marked, which 

 were skinned and sexed by various trustworthy local persons. 



