15S 
ANISODACTYLI. 
Family CERTTIIID^F. (Bonaparte.) 
Genus Tichodroma. (Illiyer.) 
Generic Characters . — Beak very long, slightly arched, slender, 
cylindrical, angular at its base, and depressed at its point. 
Nostrils basal, naked, pierced horizontally, half closed by an 
arched membrane. Feet with three toes in front, the external 
attached at its base to the middle toe by a membrane; the 
hind toe carrying a very long claw. Tail round, with the 
shafts of the quills feeble. Wings with the first primary 
short, the second and third tapering, the fourth, fifth, and 
sixth the longest. 
WALL CHEEPER. 
Tichodroma muraria. 
Tichodroma muraria. 
Illiger. 
Koch. 
Temminck. 
Gmelin. 
Of the French. 
Of the Germans. 
Savi. 
alpina, 
plioenicopiera, 
Certhia muraria, 
Tichodrome echelette, 
Gemeiner Mauerldufer, 
Ficchio murajolo. 
Specific Characters . — Two round spots on the inner web of the 
first four true primaries, and one upon the fifth; the basal half 
of all the true primaries, except the first, and of the secondaries 
