614 



Mr. D. A. Bannerman on the 



Fring'illa teydea pola/zekl from Gran Canaria is distiii- 

 giiislicd from the resident species ofTeucrife, FringUla teydea, 

 by the following marked characteristics : — 



(1) The tips of the median and greater covei-ts are much 



ivhitcr than iu F. teydea, in which bird they are 

 bluish grey. As Herr Polatzek rightly asserts, this 

 characteristic is especially apparent in freshly killed 

 specimens. After death this snow-white becomes 

 more dull with a bluish tinge. 



[2) The upper parts are the merest shade more ashy olive- 



grey than iu F. teydea. 



(;>) The black band on the forcliead is distinctly more 

 pronounced in F. t.polaizeld than in F. teydea, which 

 has hardly any indication of a frontal band at all. 



(1) The bill is shorter, as can be seen from the following- 

 table : — 



Frinyilla teydea 

 polatzeki. 

 3(J) 1-6 mm. 



1 (2) 1-0 mm, 



2($) 1-omm. 



Fv'uHjUla teydea. 



4(c?) 1-7 mm. 



1(6") 1-8 mm. 



o ( 9 ) l""'^ mm. 



1(2) 1-7 mm. 



(5) A considerable diflerence will be found in the measure- 

 ments of the wings in the two forms. 



The following measurements are given on the authority 

 of II err AouThanner, who appears to have had an enormous 

 scries available from which to made his deductions (i. e.^ 

 F. teydea polatzeki 76 skins^ F. teydea 122 skins) : — 



FrinyiUa teydea Frinyilla 



'polatzeld. teydea. 



Larp-est wing (^ 97 mm. 107 mm. 



Smallest wing- ^ f'O unn. 96 mm. 



Average wing ^ 94 mm. 101-2 mm. 



Largest wing J 97 mm. 97 mm 



Smallest wing § S-") mm. 80 mm. 



Average wing 2 87 mm. 91-7 mm. 



The Aving-measurements of three males and three females 

 of F. t. pohdzelxi which I procured are J 92, 93, 9i mm., 

 ? 86, 88, 92 mm. 



