398 



1S58, p. 394, pi. 11. fig. 1) is Tristram's Warbler; but in this view I cannot concur, as Loche 

 both describes and figures his bird as being a pale sandy isabelline bird with the underparts pure 

 white. Canon Tristram states that Sylvia deserticola has the crown and upper parts more rufous 

 than Sylvia conspicillata ; but this is not constant ; for in one specimen these parts are quite as 

 ashy in tinge as in any Spectacled Warbler in my collection. Nor does it seem to me that the 

 wing is rounder than Sylvia consjiicillata, as stated by Mr. Seebohm (Ibis, 1879, p. 31G) ; for I 

 have examined examples of Sylvia conspicillata which have the wings quite as rounded as in any 

 of the three specimens of Sylvia deserticola now before me. 



As this species is so close to Sylvia conspieillata, but may always be distinguished by having 

 the throat rufescent cinnamon instead of white, and in lacking the grey on the lower throat, I 

 have decided not to figure it. 



■.->' 



In the preparation of the above article I have examined the following specimens : — 



E Mas. II. B. Tristram. 



a, <S ad. Wed Nca, Algeria, December 15th, 1856. b, 6 . Oued Soudan, Algeria, November 29th, 185G 

 (H. B. T., types of the species). 



E Mus. II. Seebohm. 

 a, 2 . Desert between Hadjira and Blad el Omcr, Algeria, December 23rd, 185G (H. B. Tristram). 



