52 BIRDS OF EUROPE AND NORTH AFRICA 



A. arvensis harterti Whitaker. Not so dark as typical 

 form, which occurs with it in winter. Hill longer and more 

 slender. 



Breeds. — N. Tunisia, N. and C. Algeria, Moroccan Atlas. 



A. arvensis sierrae Weigold. Nearest " cantarella," rather 

 blacker on upper parts ; wing and tail average smaller and bill 

 usually slightly longer. 



Breeds. — Spain (Sierra Nevada), Portugal (Sierra da Estrella). 



A. arvensis guillelmi Witherby. Bill longer than in "cantar- 

 ella" or typical form; more black on upper parts and wings; 

 dull white beneath with no huffish tinge. Wing 106-112 (H.). 



Breeds. — N. Portugal. 



Al^mon. 



Large as Thrushes. Bill long, slender, curved; ist 

 primary longer than coverts; hind claw short, straight. 



Alaemon alaudipes alaudipes (Desfontaines). 



$ $ Above pale reddish sandy, paler on rump and upper 

 tail coverts, greyish on head and nape ; primaries dark brown, 

 white at base ; secondaries white with conspicuous black central 

 band ; beneath white or pale buff, chest spotted dark brown. 

 Bill slaty grey. Legs and feet china white. Wing $ 1 18-130, 

 $ 108-116. Tarsus 33-35. Bill $ 25-27, ? 21-24 (H.). 



Resident.— K\%^x\2.., south of Atlas ; C. and S. Tunisia ; Tripoli, 

 Cyrenaica, east to deserts of Egypt and Sinai. 



A. alaudipes desertorum (Stanley). Like "alaudipes" but 

 much greyer above. 



Resident. — Red Sea Islands and Coast ; desert between Cairo 

 and Suez. 



Chersophilus. 



Nostrils covered with feathers ; ist primary only 10-12 m.m. 

 long ; hind claw slender. 



Chersophilus duponti duponti (Vieillot). 



$ ? Above brown (occasionally rather rufous) with pale 

 margins and buff edges ; beneath white, tinged buff on breast, 

 streaked dark brown on lower throat, breast, and flanks. Bill 



