101 
INSECTIVOE.E. 
Family SYLVIADJE. 
Genus Sylvia, f Latham. ) 
PALLAS’S LOCUSTELLE. 
Sylvia certhiola. 
Motacilla certhiola, 
Syloia certhiola, 
Calamoherpe certhiola, 
Bec-Jin Trapu, 
Pallas; Zoog. i., p. 509, 
No. 141. 
Temminck; Man. i, p. 187. 
Blasius; Naumannia, 1858. 
Of the French. 
Specific Characters. — Beak strong; superior mandible black; the 
plumage of the upper parts varied with numerous spots; all the 
quills of the tail are terminated below by a large ashy blotch; 
posterior claw much curved, and longer than the toe. Length five 
inches. 
This bird, closely allied to tbe Grasshojiper Warbler, 
so well known to tbe naturalists of Great Britain, was 
introduced into tbe European Fauna by Pallas, in his 
‘Wanna Eossica,” as Turclus certhiola, and was described 
by him afterwards under tbe name of Motacilla certhiola. 
It was subsequently introduced into tbe Manual by 
Temminck as Sylvia certhiola, who has given a very 
clear description of tbe bird, and a careful comparative 
diagnosis between it and locustella. 
