Mr. A. R. Wallace on the Natural Arrangement of Birds. 205 



"We have now completed a very brief and imperfect review of 

 those families which we conceive can be separated from the mass 

 of Passeres to form the tribe of the Fissirostres, and in the 

 accompanying diagram we have endeavoured to represent at one 

 glance their various affinities. 



Diagram of the Affinities of the Fissirostres. 



TROCHILID^. 



(Hummers.) 



HIRUNDINIDJE. 



(Swallows.) 



CAPREMULGID^. 



(Goatsuckers.) 



TROGONID.S. 



(Trogons.) 



I 



GALBni.ID.£. 



(Jacamars.) 



rRioNiTiD.*;. 



(Motmots.) 

 I 

 . MEROPID.5;. .i^ CORACIAD.E. 



(Bee-eaters.) (Rollers.) 



CAPITONTDiE. 



(Puff Birds.) 



ALCEDINIDiE. 



(Kingfishers.) 



BUCEROTID^. 



(Hornbills.) 



