TEING-A. 



431 



TRINGA MARITIMA PTILOCNEMIS. 



PRYBILOF PURPLE SANDPIPER. 



Tbinga maritima couesi primariarum interiorum pogoniis externis ad basin albis ad rhachidem. 



Tringa ptilocnemis, Coues, Birds North- West, p. 491 (1874) . 



Tringa gracilis, Harting, Proc. Zool. Soc. 1874, p. 242. 



Arquatella ptilocnemis (Coues), Ridgway, Bull Nutt. Orn. Club, 1880, p. 163. 



Plates. — None. 



Habits. — Baird, Brewer, & Bidgway, "Water-Birds N. Amer. i. p. 222. 



Eggs. — Described by Brewer on page 224 of the above-mentioned volume as averaging slightly 

 larger than those of the typical form. 



The differences between the Prybilof Purple Sandpiper and the typical form have 

 already been pointed out. It is difficult to believe even in the subspecific distinctness of a 

 Purple Sandpiper said to be isolated during the breeding-season on the Prybilof Islands, 

 almost in the middle of the Behring Sea, and to wander in flocks during the rest of the 

 year as far as the Kurile Islands on the one side and the coast of Alaska on the other. 

 Such a geographical anomaly can only be accepted provisionally pending further 

 information. 



Diagnosis. 



Synonymy. 



Literature. 



%'.**' 



TRINGA ARENARIA. 



SANDERLING. 



Tringa halluce nullo. 



Diagnosis. 



