LIPAXGUS. 283 



width lieing rather more than half the leno;th of the exposed cuhnen, 

 and the tip of the upper mandible is sharply hooked. The rietal 

 bristles are strongly developed. The wing is rounded, the second, 

 third, fourth, and fifth primaries longest and subequal, the first 

 about equal in length to that of the eighth. The tail is square at 

 the tip and about eight-ninths the length of the wing. The 

 tarsus is sharply serrated on the upper portion of the hinder 

 aspect, and the middle toe and claw are about equal in length to 

 the exposed culmen. Coloration : male and female similar. 



533. Lipang'us simplex. 



Greyish Mourner. 



Ifi/scicapa simplex Lichtenstein, Yerz. Doubl. p. 53, 1S23 (Baliia). 

 Lipaugus niwplex Cab. in Scbomb. Keis. Guian. iii. p. 094, IS-IS ; Salvin, 



Ibis, ISSo, p. 803 (Bartica Grove, Camacusa, Merume Mts.) ; Scl. 



Cat. B. Brit. Mus. xiv. p. 356, 18SS (Bartica Grove, Camacusa). 

 Lipnnqvs simplex Brabourne & Chubb, B. S. Amer. i. p. 318, no. 3246, 



1912. 



Adult male. Head, back, upper wing-coverts, scapulars, rump, 

 and upper tail-coverts slate-grey like the throat and breast; 

 bastard-wing, primary-coverts, and quills blackish brown, with 

 slate-grey on the outer webs and pale margins to the inner ones 

 of the last ; tail-feathers somewhat paler than the flight-quills 

 fringed with lead-grey ; abdomen paler and more so on the under 

 tail-coverts, axillaries, and under wing-coverts ; lower surface of 

 quills brown with pale inner edges ; lower aspect of tail similar 

 but paler. 



Total length 190 mm., exposed cnlmen J 9, wing 08, tail 90, 

 tarsus 22. 



The male specimen was collected at the Great Falls Domerara 

 River in August 1913. 



Adult female. Similar to the adnlt male, but differs in having the 

 greater upper wing-coverts, flight-(|uills, and apical portion of 

 tail-feathers margined with rnldus. Wing 92 mm. 



The female described was collected on the Ituribisi River in 

 1909. 



An immature bird from the Kamakabra River like the female, 

 but more riifuus on the wings and tail, and the under wing-coverts 

 and undt;i- t;iil-c(n t;rts inclininji to liiilV. 



