1. OTIS, 2S3 



■wing about three and a half times 



as lunj,^ as the tarsus 3. LoPHOTis, p. 290. 



b'". Nuchal crest composed of shorter, 

 mostly black plumes. 

 a'. Tarsus lonjf ; the -wing about 3i 

 times length of tarsus ; outer 



aspect of wings white 4. Cumpsotis, p. 293. 



b\ Tarsus short; the wing more 



than four times length of [p. 296. 



tarsus 5. IIeteiiotethax, 



c'. Cheeks witliout whisker-like feathers; 



no conspicuous nuchal tuft t)f elongated 



plumes ; the occiput and nape without 



visible crest. 



c". Bill long, the culmen longer than 



the middle toe and claw 6. Neotis, p. 298. 



d''. Bill long, but the culmen equal to 



the middle toe and claw 7. Lissotis, p. 304. 



e". Bill short, the culmen shorter than 



middle toe and claw 8. Tbachelotis, p. 308. 



d' . Cheeks with elongated plumes, spatu- 

 lated at the ends and recurved ; quills 



attenuated at the ends 9. Sypheotis, p. 312. 



b. Feathers of lower throat and fore neck 



Conspicuously elongated, so as to form 



an overhanging shield to the crop. 



e'. Crown of head crested, as well as the 



nape and hind back ; feathers of throat 



elongated as well as those of the fore 



neck ; tarsus very long, nearly half the 



length of the wing (more than two 



thirds the length of the latter) 10. IIorB.\uoPSis, p. 315. 



/'. Crown of head with a long median 

 erectile crest of narrow feathers ; on 

 the sides of the neck a large rutl' of soft 

 feathery plumes; tarsus short; wing 

 more than four times the length of the 



tarsus 11. HoL'BARA, p. 318. 



g'. Crown of head strongly crested, but 

 not the hind neck ; feathers of the 

 throat elongated as well as those of 

 the fore neck; tarsus rather long; 

 wing more than three times the length 

 of the tarsus 12. Eupodotis, p. 322. 



1. OTIS. 



Tvpe. 

 Otis, Linn. Si/sf. Xut. i. p. 2G4 (1700) 0. tarda. 



Ranrje. Southern and Central Europe, extending across Central 

 Asia to Eastern Siberia, 2sortlieru China, and North- western 

 India. 



