AVES. 387 



all have far more than Nubian specimens. The relative 

 extent of the two white bands, and the intervening 

 dusky space on the secondary quills, are also marvel- 

 lously inconstant, and even the colour of the back varies 

 somewhat. Some specimens from Arabia ia the Berlin 

 Museum have the breast even darker and more thickly 

 spotted than in the birds from Annesley Bay. There are 

 also amongst the very fine series in that museum decided 

 traces of a passage from the grey C desertorum to the 

 rufous C. hifasciata, and as none of the characters which 

 at first sight distinguished the two appear to be at all 

 constant, even in birds from the same locality, I should 

 be disposed to unite the two races. 



175. Alauda (Galenta) cristata, L. 



G. lutea, Brehm, Habesch, No. 97. — Riipp. Syst. Uebers. No. 309. 



— HeugL Jovtm. f. Om. 1868, p. 233. 

 ? Gakrida isabdlina, Bon. Consp. p. 242. 



Common near the coast. I can see no difference 

 between specimens from the Red Sea and others from 

 India, and do not understand why Bonaparte proposed 

 to separate them. 



I obtained at Zulla an albino specimen of this bird of 

 pale isabelline colour, without any dark marks either on 

 the back or breast. 



176. A. (G.) arenicola i Tristram, var. fasca. 



Ibis, 1859, p. 58. 



I obtained a single specimen of a very dark-coloured 

 Lark on the Abyssinian highlands at Ashangi, which 1 



c c 2 



