56. RHYNCHOCYCLTJS. 171 



9. Khynchocyclus poliocephalus. 



Rhvnchocyclus poliocephalus, Pelz. Orn. Bras. p. 110 ; Tacz. Orn. 



Per. ii. p. 285. 

 Khynchocyclus megacephalus, Scl et Salv. P.Z.S. 1866, p. 189 



(Ucayali), 1867, p. 751 (E. Peru), 1867, p. 978 (Pebas), 1873, 



p. 125 (S. Peru) et p. 280 (E. Peru) ; Tacz. P. Z. S. 1882, p. 20; 



id. Orn. Per. ii. p. 283. 



Above olive-green ; head cinereous ; lores whitish ; wings and 

 tail blackish ; wing-coverts and outer secondaries margined with 

 yellowish ; rest of wing-feathers and tail-feathers slightly edged with 

 olivaceous : beneath pale yellowish, tinged with olive, brighter on 

 the middle of the belly ; under wing-coverts yellowish white ; bill 

 plumbeous ; base of the lower mandible whitish ; feet dark brown : 

 whole length 4-5 inches, wing 2*2, tail 1*8. Female similar. 



Hab. Peru. 



This species seems to differ from B. megacepTialus, with which it 

 was, until recently, united, in the nearly uniform yellowish colouring 

 of the body below, which extends over the throat and breast. The 

 bill is also rather wider than in B. megacephalus. 



a. Ad. sli. Pebas, Peru (Hau.vtceU). Salvin-Godman Coll. 



b. Juv. sk. Pebas, Peru (Hau.vwett). Sclater Coll. 

 e. Ad. sk. Xeberos, E. Peru (Bartlett). Sclater Coll. 



d, e. Ad. sk. Chyavetas, E. Peru. E. Bartlett [C.'J. 



/. Ad. sk. Cosnipata, S. Peru ( Whitely). Salvin-Godman Coll. 



g. $ ad. sk. Para (Layard). Tweeddale Coll. 



10. Rhynchocyclus viridiceps. 



Rhynchocyclus viridiceps, Scl. et Salv. P. Z. S. 1873, p. 280 ; iid. 

 Nomencl. p. 49 ; Tacz. Orn. Per. ii. p. 282. 



Above uniform olive-green, including the head ; lores whitish ; 

 wings and tail blackish ; wing-coverts and outer secondaries mar- 

 gined externally with yellowish ; rest of wing- and tail-feathers 

 narrowly edged with olivaceous: beneath yellowish olive; middle 

 of belly sulphur-yellow ; under wing-coverts yellowish ; bill dark 

 plumbeous, whitish at the base of the lower mandible ; feet brown : 

 whole length 4"6 inches, wing 2-2, tail 1 # 7. 



Hab. E. Peru. 



This small species is distinguished from the two preceding by the 

 want of any tinge of cinereous on the cap. The bill is rather 

 broader than in B. megacephalus. 



a. Ad. sk. Pebas, Peru (Hauxicell). Sclater Coll. (Type of 



the species.) 



11. Rhynchocyclus flaviventris. 



Muscipeta flaviventris, Max. Beitr. iii. p. 929. 



Cyclorhynchus flaviventer, Cab. Wiegm. Arch. 1874, i. p. 249; id. in 

 Sclmnb. Guian. iii. p. 700 ; Sclater, Ibis, 1859, p. 444. 



