RHYNCHOCYCLUS. 149 



Geuus EHYNCHOCYCLUS Cab. & Hein. 



Bhi/nchocj/cliis Cabanis & Heine, Mus. Hein. ii. p. 56, 1S59. Type 

 R.flaviventris (Wied). 



Fig. 60. — Bliynchocyclus flavlveiitris. 



Tlie >;poeies on which this genus was founded is rather a small 

 bird with a depressed bill which is hooked at the tip of the lapper 

 mandible, the width at the base is about equal to the length of the 

 exposed culmen. The rictal bristles are only feebly developed. 

 The wing is rounded, the second, tliird, fourth, and fifth primaries 

 longest and equal, the first about equal in length to that of the 

 eighth. The tail is long and square at the tip and about five- 

 sixths tlie lenoth of the wing. The tarsus is about twice the 

 length of the exposed culmen. Coloration : male and female 

 simihir. 



Kei/ to tlie Sj'ccies. 



A. Upper surface dark olive-green ; throat 



greyish ; fore-ueek yellowisli green. 

 a. Larger, wing nuu'e than 60 nnn. ; tail 



more than 50 mm E. a. excnnincttus, p. 1 19. 



h. Smaller, wing less tlian 60 nun. ; tail 



less than 50 mm li. p. iiiqit/'s/'/or, ]). 150. 



B. Upper surface yellowish green; throat and 



fore-neck oehreons-yellovv Ii. f. (jloriosus, p. 151. 



440. Rhynchocyclus sulphurescens examinatus. 

 I'ei/zkln's Flat-iuli,. 



RhyncJinci/chia aRsimilis Pelzcln, Oi-n. Hras. pp. 110, 181, nom. nnd.. 



1S()!) (Itio Negro. N. Brazil j ; liral)ourno & Chubb, H. S. Anier. i. 



p. 271, no. 2759, 1912. 

 liliynchocyrluis sulphur cscens (nee Spix) Salvin, Ibis, 1SS5, ]). 295 



(Bartica Grove, Camacusa, Mermne Mts., Itoraima 8500 ft.); 



Sclater, Cat. B. Brit. Mus. xiv. p. 16S (part), ISSS (Carimang 



Itivcrj. 

 liht/ncliort/lus sulpliurfxcrns rxdviiiHitus Cliubh. Bull. Hril. Orn. T'l. xi. 

 ' p. lOS, Maivli 1920 (Hartica). 



Adult male, (iem.-rul colour of upj'cr surface, including the 



