458 LANIIDJE. 



Key to the S^^i'des. 



a. Upper tail- coverts and middle pair of 



tail-feathers of totally different colours, 

 a'. A white patch on primaries. 

 a". Tail entirely black and while, the 



two colours abruptly defined. 

 '". Back grey. 



a 4 . Two middle pairs of tail- 

 feathers entirely black. 

 a 5 . Lesser wing-coverts black 



with grey tips L. Ittktora, p. 4oi). 



b 5 . Lesser wing-coverts entirely 



grey. 

 G . Inner webs of secondaries 



chiefly white L. assimilis, p. 4GO. 



b f> . Inner webs of secondaries 



chiefly black L.fattax, p. 460. 



6*. All the tail-feathers broadly 



white at their base L. homey eri, p. 4(51 . 



b'". Back chestnut. 



c 4 . Upper tail-coverts whitish 



grey L. vittatus, p. 462. 



d 4 . Upper tail-coverts chestnut . . L. collurioides, p. 462. 

 b'\ Tail black or brown and rufous, 

 blending into each other. 



c'". Crown of head black L. nigriccps. p. 463. 



d'". Crown of head grey L. erythronotus, p. 464. 



b'. No white patch on primaries. 



c". Head and back grey L. tephronotus, p. 465. 



d". Head grey, back chestnut L. collurio, p. 466. 



b. Upper tail-coverts and middle pair of 



tail-feathers of same colour. 

 c 1 . Crown of head and back nearly of the 



same rufous or sandy colour. 

 e". Tail shorter than wing ; outer tail- 

 feathers falling short of tip of tail 

 by about half length of tarsus. 

 e'". An indistinct white supercilium ; 



lores whitish _ L. isabellinus, p. 467. 



/'". A very distinct white super- 

 cilium ; lores deep black L. phcemcuroides, p. 468. 



/". Tail equal to or longer than wing ; 



outer tail-feathers falling short of 



tip of tail by about length of 



tarsus. 



y'". Whole crownrufous, darkerthan 



back , . L. cristatus, p. 468. 



h'". Anterior part of crown greyish 

 white ; posterior part greyish 



brown like back L. lucionensis, p. 4C9. 



d'. Crown grey ; back chestnut barred 



with black L. tiyriims, p. 470. 



