BUBONINJi. 



c'". Under tail-coverts produced nearly 

 to the end of the tail ; the latter 

 short, only about half the length 



of the wiug 5. Xyctka, p. 12o. 



« . rail long and graduated, approach- 

 ing the wing in length, the ditfer- 

 ence between them scarcely greater 



than the length of tarsus (3. Surxia, p. 129. 



d'. Cere swollen and inflated, generally pea- 

 8ha_ped, the nostril pierced therein. 

 c". ^Vith lengthened first primary, the 

 distance between its tip and that of 

 the third primary not so great as the 

 len^rtli of tarsus, 

 e'". Fifth primary esealioped on outer 

 web like the fourth ; toes at base 

 always thickly enveloped in the 

 tarsal feathers ; hind part of tarsus 

 always hidden by plumes. 

 «'. Xostril pierced "near the anterior 



margin of the cere 7. Carlve, p. 132. 



b\ y, ostril situated in the centre of 



„„ „./!»« <=<^.^e 8. Hetekoglaux, p. 141. 



/ . -bifth primary not esealioped, the 

 fourth scarcely so; junction of 

 toes as well as hinder part of 



,. ^^,. *^'^'®^^ always bare 9. Speotyto, p. 142 



d . VVith shortened first primary, the 

 distance between its tip and that of 

 the third primary equal to or greater 

 than length of tarsus. 

 //'". Wing long and pointed, the dis- 

 tance between it and the tip of the 

 tail equal to or less than tarsus. 

 c^. Bare part of tarsus longer than 



middle toe and claw IQ. Gymnasio, p. 149 



t/\ JBare part of tarsus not so long as 

 middle toe and claw. 

 a'. Tarsus not twice length of 



middle toe 11. Xixox, p. 151. 



6\ Tarsus twice length of middle 



/ '" ^v *°^T,' ■ : ■ ■ "j ;•;••, ^^- Sceloglal-x, p. la?. 



h . W ing short and rounded, the dis- 



tance between it and the tip of 



the tail much greater than tarsus. 



<■'. Tarsus about equal to middle toe, 



densely feathered; tail much 



more than half the wino-, 



rounded . ". 13. GLAUciDirM, p. 188. 



f\ Tarsus a little longer than middle 

 toe, scantily haired; tail less 

 than half the wing, even 14. Micrathexe*,p.224. 



* The comparative characters of this la.st genus are drawn from Mr Rir 

 way s work, as I have never seen Micrathme. 



•> 



