FBANCOLINUS BICALCAKATUS. 



(SENEGAL FRANCOLIN.) 



Tetrao bicalcaratus, Linn. Syst. Nat. i. p. 277 (1766). 



Le Bis-ergot, Buff. Hist. Nat. Ois. ii. p. 443 (1783). 



Senegal Partridge, Latham, Gen. Synop. ii. p. 757 (1783). 



Perdix bicalcarata, id. Ind. Orn. ii. p. 643 (1790). 



Perdix senegalensis, Bonn. Tabl. Encycl. et Method, i. p. 212 (1790). 



Perdix adansonii, Temm. Hist. Nat. Pig. et Gall. iii. p. 305 (1815). 



Francolinus senegalensis (Bonn.), Steph. in Shaw's Gen. Zool. xi. part 2, p. 330 (1819). 



Ch&topus adansonii (Temm.), Swains. B. of W. Africa, ii. p. 217 (1837). 



Francolinus bicalcaratus (Linn.), Gray, List Gall. B. iii. p. 33 (1844). 



Bidymacis senegalensis, Beichenb. Handb. Gall. fig. 1768 (1853). 



Francolinus albiscapus, id. op. cit. figs. 1753-54 (1853). 



Chcetopus bicalcaratus (Linn.), Bonap. Compt. Bend. xlii. p. 882 (1856). 



Hadjel es Sahara, Bardgh, Arabic. 



Figures notabiles. 

 DAubenton, PI. Enl. 137 ; Beichenbach, ut snpra. 



<J ad. pileo brunneo, antice et lateraliter nigro marginato : superciliis albis : nucha, rufescente : dorsi plumis 

 medio nigris, rufescente marginatis et albido variegatis : remigibus nigricantibus in pogonio externo 

 cervino albido notatis et in pogonio interno cervino striatis vel fasciatis : cauda, nigro-fusca, rufescenti- 

 cervino variegata : mento albo, corporis inferioris plumis albidis, macula scapali nigra, stria utrinque 

 laterali rufescenti-cervina : tarso bicalcarato. 



$ ad. mari similis. 



Adult Male (Rabat). Fore part of the crown and a stripe on each side black; rest of the crown reddish 

 brown ; hind neck and fore part of the back varied black and reddish brown, the feathers margined 

 with creamy white ; rest of the upper parts brown, vermiculated with black ; the scapulars and wing- 

 coverts with a submarginal creamy- white stripe on either side ; most of the quills with the outer web 

 brown, barred with warm buff, and the inner web brown, irregularly barred with rufous buff; tail dark 

 brown, clouded and irregularly barred with rufous buff; superciliary stripe and space in front of the 

 eye white ; chin and upper throat white, clouded with greyish brown ; sides of the head white, striped 

 with blackish ; chest and underparts generally buff, with a drop-shaped median spot towards the tip 

 black, barred with buff, and on the basal half broadly bordered with chestnut, this latter colour 

 wanting on the lower flanks and under tail-coverts, and the central black patch is larger : bill yellow, 

 but dull greenish at the base ; the culmen darker; legs dull greenish yellow ; iris brown. Total length 

 about 12 inches, culmen 1 - 15, wing 7-3, tail 3 - 25, tarsus 2'6. 



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