CTMBILAIMUS. — MAOKENZI^NA. 7 



barred with buff, and the underparts buff narrowly barred with 

 dark brown. Wing 78 mm. 



Breeding -season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi River, Supenaani River, 

 Bartica,Kamakabra River, Bonasika River, Abary River, Mazaruni 

 River, Arwye Creek, Tiger Creek, Great Falls Demerara River 

 (McConnell collection) ; Berbice (Leacli) ; Kamakusa (Whitelr/). 



Extralimital Range. Surinam, East Ecuador. 



Habits. Unrecorded in British Guiana. 



[Mackenzi^na Chubb. 



MacTcenziana Chubb, Ann. & Mag. Nat. Hist. (9) ii. 1918, July 1, 

 p. 123. Type M. leacU (Such). 



Fig. 5. — Machenzicena leacJii. 



Reichenbach, in 1850, proposed the generic name Nisius and 

 gave a figure in his Av. Syst. Nat. Vog. pi. Ixxi., which has been 



