354 BIRDS OF BRITI>H OriANA. 



fintJ out what species of Goatsucker gave utterance to these cries, 

 but it would be an interesting point to decide/' 



Mr. Barrington Brown gives the following note (Canoe and Camp 

 Life, p. 244) : — " On many of the large clusters of rocks in mid- 

 river were the nests of a small species of Caprimulgidffi called 

 ' Wockariyou/ These can hardlv be called nests, for the bird 

 only lays its t»vo small speckled egjjs on a hollow in the bare rock, 

 or in a little depression scratched in the gravel upon them. The 

 ]>arent birds do all in their power to entice one away from the 

 nest hv fluttering aloncr the ground h< if wounded." 



Genus NYCTIBIUS Vicill. 



Xyctihius Yieillot, X. Diet. d'Hkt. Nat. xvi. p. G, 1817. Type 

 X. jamaicensis (GmeL). 



Tlie members of this genus are distinguished by their long, thin, 

 and narrow bills with very wide gapes. There are five phalanges 

 to tlie outer toe, the claws are strong an 1 sharply curved, but 

 tiiere are no pectinations. 



Key to the Sj/edes. 



A. Smaller, wing les.s than 290 mm. 



a. Colour chiefly dark rufous ; size small, 



wing less than 200 mm X. hracteatus, p. 3-54. 



b. Colour chiefly grey ; size large, wing 



more than 2(X) mm X. griseus, p. 3o5. 



B. Larger, winsr more than 290 mm. 



c. Colour chiefly pale rufous or buff; 



size small, wing less than 840 mm — S. 1on(/icauJatiis, p. 3-jfJ. 



d. Colour chiefly grey ; size large, wing 



more than 340 mm X. f/rauJix. p. Ho7. 



22fi. Nyctibius bracteatus. 

 Colombian Goatsucker. 



Xyctihivg hraeteatvR Gould, P. Z. S. 1846. p. 1 C Bogota) : Salvin. IIjIs, 

 1885, p. 488 ; Braboume & Cliubb, B. S. Amer. i. p. 97, no. 920, 

 1912. 



Xyctibius rtifus Cab. in Schorab. Reis. Guian. iii. p. 711, 1848. 



Adult. General colour fbove and below rufous minutely barred, 

 mottled, or inarked with black and white spots to the tips of the 



