244 Mr. D. A. Bannerman on an Ornithological 



In a series of 32 eggs of C. m. polatzeki procured in 

 Fuerteventura, an extraordinary variation is noticeable 

 in shape and coloration, in which at least three more or 

 less distinct types are recognisable. 



The most common type appears to have a ground-colour 

 of creamy-white and to be fairly regularly spotted with 

 pinkish brown or greenish brown, with underlying spots of 

 lavender-grey. 



Another type of which I obtained several examples had 

 the ground-colour creamy-white with dense blotches of 

 greenish brown, either forming a complete girdle round 

 the middle of the esro^ or a zone round the broad end. In 

 many cases underlying blotches of pale purplish grey are 

 present. All the eggs in this class have a distinct yellowish 

 tinge about them. 



The third and last distinguishable type, which seems to 

 be the most uncommon, has a ground of stone-colour and 

 is finely speckled with pale greenish grey becoming suffused 

 at the larger end. 



The eggs of this subspecies are usually oval and slightly 

 pointed in shape. The measurements of the above series 

 of 32 eggs are: maximum 215x14 ram. ; minimum 18 x 

 14 mm. Two peculiarly shaped specimens measure 19"5 x 16 

 and 20x13 mm. respectively. 



Anthns berthelotii berthelotii. Berthelot's Pipit. 



Anthus berthelotii berthelotii Bolie ; Bannerman, Part I. 

 pp. 43, 44, 45, 46, 49, 52, 54, 55, 56, 57, 59, 60, 65, 75, 85, 

 89. 



Anthus berthelotii lanzarotee Tschusi & Polatzek, Orn. 

 Jahrb. 1908, p. 191. 



The Pipit from the eastern Canaiy Islands has been 

 Separated from the bird found on the western islands under 

 the name Anthus b. lanzarota. I purposely collected a 

 large series from the eastern islands in various plumages 

 to compare with the series I had already obtained of Anthus 

 b. berthelotii in Gran Canaria. With the added material 

 in the British Museum I have carefully studied the validity 



