Bird-Life of Eastern Algeria. ]41 



28. Galerida cristata arenicola Tristr. Tristram's Crested 

 Lark. 



This form of Crested Lark is common in the plain of El 

 Outaia and is also found near Biskra and Sidi Okba. Nests 

 with four or five eggs were found from April 16 onwards. 

 In many cases the eggs are more boldly marked than those 

 of G. theklce, but this is not invariably the case, and as the 

 ranges of the two species overlap, careful identification is 

 necessary (J). 



29. Galerida theklae harterti Erl. Hartert's Crested Lark. 

 Nest and four eggs of this dark race taken at H. Mes- 



koutine, April 21, 1912 (W). Common on hillsides at Ain 

 Mokra ; nests with five and four eggs taken on May 9 and 

 12 (R). 



30. Galerida theklae hilgerti Roths. & Hart. Hilgert's 

 Crested Lark. 



Common on the stony hillsides near El Outaia and El 

 Kantara, and also east to Lamb^se. Most nests contained 

 three eggs, and none more than four. They show great 

 variation, but are never, in my experience, so boldly marked 

 as some eggs of G. cristata arenicola. Eggs were found 

 from April 20 onward (J) . 



31. Galerida theklae deichleri Erl. Deichler's Crested 

 Lark(?). 



Met with on stony patches in desert south of Bordj 

 Saada : one flushed from nest with three incubated eggs on 

 April 27 ; and another nest with four eggs taken next 

 day (J). 



32. Lullula arborea harterti Hilg. North-African Wood- 

 lark. 



Met with along the hillsides from Batna to Lamb^se : a 

 nest with four eggs found at the edge of the scrub on 

 April 26 (J). Woodlarks met with in February at El 

 Guerrah and H. Meskoutine : also in the market at Algiers 

 (W). 



