TROGONIDiE. 429 



Suborder TROGONES. 



(By W. R. OGILVIE-GRAXT.) 



Palate schizognathous. Easipterygoids present. Sternum with 

 four notches. 



Femoro-caudal and semiteudiuosus muscles present, accessory 

 femoro-caudal absent. 



The first and second digits are turned backwards and supplied 

 by the flexor longus hallucis ; the front toes are supplied by the 

 flexor perfbrans digitorum. 



Pterylosis Passerine ; spinal feather-tract well defined from nape 

 to oil-gland, and not forked ; the after-shafts to the contour- 

 feathers are very long ; down absent. 



Oil-gland nude. 



Caeca present. 



This suborder comprises one family only. 



Family TROGONID.E. 



Bill short, strong, wide and curved, the tip of the culmen 

 hooked ; the edges of the mandibles serrated or smooth. Nostrils 

 and base of the mandibles covered with well-developed bristles. 



Tail-feathers 12. 



Ranr/e. Indian, African, and Tropical- American Regions. 



Kei/ to the Genera. 



I. Upper tail-coverts extend to or beyond 



the extremity of the tail 1. Pn.vROMACRrs, p. 430. 



II. Upper tail-coverts do not extend 



neiirly to the extremity of the tail. 

 A. Centre pair of tail-feathers the 

 same in both sexes : — 

 a. Pm-phsli, bluish, orgreenish, with- 

 out a terminal black band. 

 a'. Sides of the fj^ce feathered ; 

 feathers behind the eye, and 

 ear-coverts produced into long 

 hair-like filaments ; upper tail- 

 coverts extend to the middle 

 of the tail 2. Euptilotis, p. 436. 



