CYMBILAIMUS. — MACKENZI^NA. 7 



barred with buff, tiiul the uiulerparts buff narrowly barred with 

 dark l)rown. Wing 78 mm. 



Breeding-season. Unknown in Biitish Guiana. 



Xest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi Kiver, Supenaam liiver, 

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

 River, Arwye (^reek, Tiger Creek, Great Falls Demerara River 

 (McConnell collection) ; Berbice {Leach) ; Kamakusa (Whitely). 



K.vtralimital Range. Surinam, East Ecuador. 



Habits. Unrecorded in British Guiana. 



[Mackenzi.ena Chubb. 



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

 p. 123. Type 21. leachi (Such). 



Fig. S. — 3J<tcliiiizi(cna leachi. 



Reiclienbach, in LSfjO, projiosed the gonori(! name .\isius and 

 gave a figure in his Av. Syst. Nat. Viig. pi. Ixxi., which has l)oen 



