74 PLUVIALINiE. 



beyond the middle, compressed until towards the end, the tip 

 depressed and blunted ; gape-line very slightly recurvate ; 

 nasal groove half the length of the bill ; nostrils linear, sub- 

 basal, pervious. Legs of moderate length, slender ; tarsus 

 anteriorly scutellate ; toes of moderate length, slightly webbed 

 at the base ; hind toe very small ; claws short, compressed, 

 arched, obtuse. Wings long, narrow, pointed ; inner secon- 

 daries greatly elongated, and tapering ; tail rather short, 

 somewhat rounded. 



1. Strepsilas Interpres. Collared Turnstone. In winter, 

 the middle of the back and the lower parts white ; the fore 

 neck black ; the upper parts blackish-brown. In summer, 

 the upper parts variegated with black and brownish-red. 



GENUS VI. HiEMATOPUS. OYSTER-CATCHER. 



Bill long, slightly bent upwards beyond the middle, pen- 

 tagonal at the base, where it is covered by a soft skin, which 

 extends nearly half its length, beyond which it is extremely 

 compressed, in the form of a thin blade, abrupt at the end ; 

 gape-line slightly ascending beyond the middle ; nasal sinuses 

 long ; nostrils linear, sub-basal. Legs long, and stout ; tarsus 

 compressed, covered with hexagonal scales ; toes three, short, 

 spreading, broadly margined, webbed at the base ; claws very 

 small, narrow, obtuse. Wings long, acute ; inner secondaries 

 tapering and very elongated ; tail rather short, nearly even. 



1. Hcematopus Ostralegus, Pied Oyster-catcher. Bill 

 vermilion ; feet pale purplish-red ; plumage black and white. 



