/ 



THE IBIS, 



A 



QUARTERLY JOURNAL OF ORNITHOLOGY. 



EDITED BY 



PHILIP LUTLEY SCLATER, M.A., Ph.D., P.R.S.. 



SECRETARY TO THE ZOOLOaiCAL SOCIETY OF LONDON. 



VOL. III. 1891. 

 SIXTH SERIES. 



Cognovi omnia volatilia coeli. 



LONDON: 

 GURNEY AND JACKSON, 1 PATEENOSTER ROW. 



(Successors to J. VAN VOORST.) 



1891. 



