RHYXCHOCYCLUS. 151 



edited with olive-green on the outer webs and slightly paler on 

 the margins of the inner webs ; crown of head rather darker than 

 the back ; loral space and the short feathers above and below the 

 eye greyish white ; throat, breast, and sides of neck yellowish 

 green wdth a tinge of ash-grey on the chin and throat ; abdomen, 

 under tail-coverts, and under wing-coverts lemon-yellow ; under 

 , surface of quills dark brown with pale inner edges ; lower aspect 

 of tail pale brown with a slight indication to paler margins on 

 the inner webs. 



Total length 105 mm.^ exposed culmen 10, wing 58, tail 42, 

 tarsus 16. 



The male described was collected at Bartica in 1911. 



Adult female. Similar to the adult male but slightly smaller. 

 Wing 56 mm. 



3reeding-season. Unknown. 



JS^est. Unrecorded. 



Egys. Undescribed. 



Range confined to British Guiana. -Supenaam River, Bartica, 

 Anarica River, Great Falls Demerara River (^McConnell collection^. 



Habits. Unrecorded. 



448. Rhynchocyclus flaviventris gloriosus. 



Yellow-vented Flat-bill. 



CyclorJiyiichus JJaviventer Cab. in Schomb. Keis. Guian. iii. p. 700, 1848. 

 HhynchocyclKS flaviventris Salvin, I1)is, 1S85, p. 29o ; Sclater, Cat. B. 



Brit. Mus. xiv. p. 171, 18SS (British Guiana). 

 Hhi/ncJioci/ch/s flaviventer Bvsihouvnii & Chubb, B. S. Amer. i. p. 272, 



no. 277U (part), 1912. 

 Rhynchocychts flavivenlns r/loriosus Chubb, Bull. Brit. Orn. Club, 



xl. p.'lOS, March 1920 (Quonga). 



Adult. Upper surface yellowish olive-green including the 

 head, entire back, lesser upj)er wing-covorts, outer edges of the 

 primary-quills, and outer margins of tail-feathers ; metlian and 

 greater upper wing-coverts and innermost secondary quills dark 

 brown with sulphur-yellow margins to the feathers ; inner webs 

 of fliglit-quills dark brown edged with white ; inner webs to tail- 

 feathers pale brown ; base of lores, sides of face, throat, and 

 upper breast ochreous-yellow ; sides of breast and sides of body 

 du>ky-grov ; alidoinon and under tail-coverts lemon-ytdlow ; 

 under wing-coverts whito^ those roujul the margin palo yellow ; 



