LEUCOLEPIS. 



Genus LEUCOLEPIS Reichenb. 



365 



Leucolepis Eeichenb. Avium Syst. Nat. pi. Ivii. March 1850. Type 

 L. mttsica (Bodd.). 



Fig. 141. — To' show the peculiar formation of the bill. 



Tbis genus is distinguished by the compressed bill and sharply 

 ridged culmen ; the height at the nostrils slightly exceeds the 

 width. The wing is rounded, the fourth, fifth, and sixth primaries 

 longest and about equal, the third about equal to the seventh, the 

 second about equal to the ninth, and the exposed first primary 

 about equal in length to the tarsus. The tail is rounded at the 

 tip and about half the length of the wing. The tarsus is about 

 onerfourlh longer than the exposed culmen. Coloration : male 

 and female similar. 



573. Leucolepis arada. 



Musical When. 



Myrmornis arada Herm. Tab. Affin. Anim. p. 211, note 1783. 

 Formicarius musicus Bodd. Tabl. PL Enl. p. 44, 178.3 (Cayenne). 

 Cyphorhinus cantans Cab. in Schomb. Eeis. Guian. iii. p. 673, 1848 



(Upper Pomeroon and Wenamu Kivers). 

 Cyphorhinus musicus Sharpe, Cat. B. Brit. Mus. vi. p. 290, 1881 



(British Guiana); Salvin, Ibis, 1885, p. 200 (Merume Mts., 



Camacusa, Atapurau Eiver) ; W. L. Sclater, Ibis, 1887, p. 318 



(Maccasseema, Pomeroon Eiver). 

 Leucolepia musica Beebe, Our Search for a "Wilderness, pp. 188, 309, 



310, 321, 330, 1910 (Hoorie Creek, Arirau Eiver) ; Brabourne & 



Chubb, B. S. Amer. i. p. 339, no. 3462, 1912 ; Beebe, Trop. Wild 



Life in British Guiana, p. 233, 1917. 

 Leucolepis arada Stresem. Nov. Zool. xxvii. p. 829, 1920. 



" Necklaced Jungle Wren " or " Quadrille-bird " {Beebe). 



Adult male. General colour of the upper surface rust-brown 

 including the back, wings, and tail, the wings and tail barred with 

 black ; a black collar on the hind-neck, with ovate white spots to 

 the feathers, which are more profuse on the sides of the neck ; 



