852 THE AMERICAN XA TLrRALIST. [Vol. XXXVIII. 



Supersuborder 



XIII. 



Ralliformes. 



Suborder 



XX. 



FULICARI.-E. 



Superfamily 



1. 



Heliornithoidea. 



Family 



I, 



Heliornithidae. 



Superfamily 



II. 



Ralloidea. 



Family 



I. 



Rallidje. 





II. 



Aramidae. 



Supersuborder 



XIV. 



Apterygifor.mes. 



Suborder 



XXI. 



Apteryges. 



family 



I. 



Apterygidae. 



Supersuborder 



XV. 



Gallifgrmes. 



Suborder 



XXII. 



Hemipodi. 



Family 



1. 



Hemipodidae. 



Siiborder 



XXIII. 



Crypturi. 



S b^"^^^^ 



I. 



Crypturidae. 



Li order 



XXIV. 



Gallin/e. 



amiy 



I. 



Megapodidae. 





II. 



Cracidae. 





III. 



Phasianidae. 





IV. 



Tetraonidae. 





V. 



Odontophoridae. 





VI. 



Numididae. 



Sib d 



VII. 



Meleagridae. 



XXV. 



Opisthocomi. 



Family 

 Supersuborder 



I. 



XVL 



Opisthocomidae. 

 Pteroclidiformes. 



Suborder 



XXVI. 



Pterocletes. 



Family 

 Supersuborder 



I. 



Pteroclididae. 



COLUMBIFORMES. 



Suborder 



XXVII. 



COLUMB.E. 



family 



II. 



Treronidae. 

 Columbidae. 





III. 



Peristeridae. 





IV. 



Gouridae. 



Suborder 



XXVIII.' 



Didunculidae. 



DlDI. 



Family 

 Supersuborder 



XVIII." 



I.)ididc^^ 



Palamedeiformes. 



