CICONIIDJE. 



291 



Family IV. ClCONIIDiE. 



Key to the Suh-families. 



Bill straight along the line of the culmen, 

 or only slightly decurved ; the lower 

 mandible having the genys recurved, but 

 never decurved CICONIINjE, p. 291. 



Bill smooth and decurved, the lower man- 

 dible fiiUowing the curve of the upper 

 one towards the tip TANTALINjE, p. 321. 



\ 



Sub-family CICONIIN^. 



Key to the Genera. 



a. Under tail-coverts stiifened and elon- 



gated so as to appear like rectrices, and 



often equalling or even much exceed- 



inir the latter in length. 



o'. Black tail-feathers long, equalled by 



the white under tail-coverts, the 



two centre rectrices slightly shorter 



than the rest, causing a small fork ; 



sides of face and upper throat bare. 1. A.bdijiia, p. 292. 

 b'. Tail-feat'iers black, arranged in the 

 form of a deeply cleft fork, and 

 exceeded by the white under tail- 

 coverts, which sui-pass most of the 

 rectrices in length and appear as if 

 they were true rectrices. 

 a" . Legs very short, the tarsus not 

 twice the length of the middle 

 toe and claw ; sides of face and 



throat feathered 2. Dissuba, p. 294. 



b" . Legs much longer, the tarsus more 

 than twice the length of the 

 middle toe and claw ; lores and 

 region of the eye bare, as also the 

 sides of the upper throat ; sides 

 of lace and centre of throat 

 feathered 3. EtrsjENUKA, p. 297. 



b. Under tail-coverts ordinary, not stiffened 



and not exceeding the length of the 

 tail-feathers. 

 c'. Culmen shorter than tarsus ; bill not 

 gaping towards the end, and the 



sreriys nearly straight throughout . . 4. Ciconia, p. 298. 

 d'. Culmen longer than tarsus ; bill 

 gaping widely towards the tip ; edge 



u2 



