MOTACILLID.li — XEOCORYS. 



79 



within this State, or perliaps near the sea-shore, but the nest has never yet 

 been found on this coast. Great numbers often associate together in scat- 

 tered Hocks during winter, and their walk reminds us of the water-thrushes. 



Genus NEOCORYS, Sclater. 



Neocorys, Sclater, P. Z. S. 1857, 5. — Baird, Birds N. Amer. I8.5S, 2.33. 



Gen. Cii.^R. Bill half as long as the head ; the eulmcn concave at the base, slightly ile- 

 curvccl at the tip. Rictns without bristles. Legs stout ; tarsi distinctly scutellate, longer 

 than the middle toe ; hind toe very long, equal to the tarsus, much longer than the mid- 



N. Spra^uei. 



die too, the claw but slightly cm-vcd, and about half the total length. Inner lateral toe 

 rather longer than outer. Wings much longer than tail ; first quill longest. Tertials 

 considerably longer than the secondaries. Tail rather short, emarginate. 



A^. 'Spra^itfi. 



Only one species of this genus has been described ; it belongs to the in- 

 terior plains of Xorth America. 



