of the United States 13 



SUBCLASS II. 



Hind toe articulated higher on the tarsus than the fore 

 toes, incapable of grasping, or wanting. 



ORDER III. GALLING. 



Tarsi rounded, robust, rather short ; tibiae wholly feathered: 

 bill short, vaulted. 



21 . Gallinacei. Fore toes connected at base by a membrane. 



* Tarsi naked. ** Tarsi feathered. 



22. Crypturi. Toes not connected by a membrane. 



* Four toed. ** Three toed. 



ORDER IV. GRALL.E. 



Tarsi rounded, slender, elongated ; tibiae almost always 

 partly naked : bill generally elongated. 



23. Struthiones. Feet two or three toed ; toes divided : 

 no quill feathers. 



24. Pressirostres. Bill moderate, rather robust : hind toe 

 wanting or very short. 



25. Alectrides. Bill short, stout, subvaulted : toes four. 



some or all connected. 



* Hind toe not touching the ground. 

 ** Hind toe bearing on the ground. 



26. Herodii. Bill elongated, stout, robust. 



* Hind toe touching the ground only at tip. 



** Hind toe bearing on the ground with several joints. 



27. Falcati. Bill very long, arcuated : face naked : hind 

 toe bearing on the ground nearly its whole length. 



28. LiMicoLiE. Bill elongated, slender : hind toe hardly 



touching the ground, or wanting. 



29. Mac rod act yli. Bill short or moderate : toes divided, 

 very long: hind toe bearing on the first joint. 



* Toes simple. ** Toes pinnated 



Vol. II. 2 



