CHAEADRIUS. 



123 



Plates. — Baird, Brewer, & Ridgway^ Water-Birds N, Amer. i. p. 161 (figure of head). 



Literature. 



Habits.-) ., , . , 



^ y described in the 



Eggs. J 



same volume, p. 163, as similar to those of C. melodus. 



The Western Piping-Plover only differs from the eastern form in having the black Subspecific 

 ring round the neck meeting on the breast. 



It is said to inhabit (presumably as a summer visitor only) the basin of the Missouri, Geo^aphi- 

 breeding on the banks of the rivers and the shores of the lakes. tion. 



In both forms of this species the black ring round the neck and the black band across 

 the forehead are wanting in young in first plumage, but in adult birds they vary in intensity 

 very slightly in consequence of sex, and not at all in relation to season. 



C. semipalmatus. 



G. hiatieula. 



CHARADRIUS SEMIPALMATUS. 



SUMIFJZMJTUD RINGED PLOVER. 



Chakadkius digitorum non solum externo cum medio, sed etiam medio cum interno membrana Diagnosis, 

 connexo. 



No local races of this species are known. 



Variations. 



r2 



