XXXIV 



VIII. Classification of the Puff-Mr ds. 



The Puff-birds cannot, I think, be naturally divided into subfamilies, but fall into seven 

 genera, which may be shortly distinguished as follows : — 



A. Eostrum rectum ad basin dilatatum, apice uncinate 1. Bucco. 



B. Rostrum modice incurvum, compressum, apice (nisi in Hapaloptild) 



non uncinato. 

 a. Cauda rotundata. 

 a. Alis brevibus. 



«'. Eostro breviore incrassato, 



Cauda modica 2. Malacoptila. 



Cauda brevi 3. Micromonacha. 



V. Eostro longiore tenui 4. Nonnula. 



h. Alis elongatis. 



Eostro uncinato, cauda breviore . . . . . . . .5. Hajpalojptila. 



Eostro leviter incurvo, cauda elongata 6. Monacha. 



1). Cauda brevi quadrata 7. CheUdo;ptera. 



Genus I. BUCCO. 



Fig. 7. 



Bucco coUaris. 

 a. Bill, from side. h. Bill, from above, c. Wing-end, from within, d. Tail-end, from below. 



e. Left foot, from inside. 



