146 CHARADRIID.E. 



h". No black abdomen in summer, this 



being white ; rarely a black throat ; 



plumage of upper surface plain and 



mostly uniform. 



e'". Bill stout, or moderately so ; culmen 



about equal to the length of the 



middle toe and claw. 



c 4 . A hind toe present 25. Aphriza, p. 208. 



d 4 . No hind toe 26. Ochthodromus, 



/'". Culmen shorter, less than length of [p. 209. 



middle toe and claw. 

 e 4 . Tibia feathered nearly to the tibio- 



tarsal joint 27. Eudromias, 



/*. Tibia bare for some distance. [p. 234. 



a 5 . Hind toe present 28. Zonibyx, p. 238. 



b 5 . No hind toe. 



« 6 . Tarsus long, twice the length 



of exposed culmen 29. Podasocys, p. 240. 



b". Tarsus shorter, never twice the 

 length of exposed culmen. 

 a'. Tail long and wedge-shaped, 

 more than half the length 



of the wing 30. Oxyechus, p. 242. 



b 1 . Tail shorter and more 



square, not exceeding half 



the length of the wing. 



«\ Tarsus long, exceeding 



middle toe and claw in 



length. 



« 9 . Outer toe joined to the 



middle one by a web as 



far as the second joint. 31. yEGiALEus, p. 250. 

 V. Outer toe not connected 

 with the middle one 



near the base 32. ^Egialitis, p. 254. 



b H . Tarsus very short, less 



than middle toe and claw. 33. Pluyianellus, 

 g'". Culmen longer than middle toe and [p. 303. 



claw. 



(f. Bill straight, not deflected 34. Thinornis, p. 304. 



h 4 . Bill deflected to the right 35. Anarhynchus, 



[p. 306. 



12. XIPHIDIOPTERUS. 



Type. 

 Xiphidiopterus, Heiche?ib. Av. Syst. Nat. p. xviii (1852). X. albiceps. 



Bange. Western Africa to the Upper White Nile district. Java ; 

 Sumatra ; Timor. 



Key to the Species. 



a. Head grey, forehead and centre of crown white ; 



throat grey ; wing-coverts black ; under surface 



of body white albiceps, p. 147. 



b. Head and throat black ; wing coverts ashy brown 



like the back : breast ashy brown, the abdomen 



black cucullatus, p. 148. 



