194 



CERTHIADiE. 



GENUS CCXLL— MNIOTILTA, Vieillot. 



Beak short, slender, straight, 

 intire, compressed: man- 

 dibles equal, acute. 



Rostrum breve, gracile, rec- 

 tum, integrum, compres- 

 sum : mandibulcje sequales, 

 acutas. 



Digiti exteriores inasquales : 

 pollex gracilis, longius- 

 culus. 



Outer toes unequal : hinder 

 one slender, elongated. 



Sp. ] . Mn. varia. 



Certhia varia. Shavo, v. viii. p. 234. pi, 34.-— Sylvia varia. 

 Steph. V. X. p. 639. — North America. 



GENUS CCXLII.— THRIOTHURUS, Vieillot. 



Rostrum longiusculum, cy- 

 lindricum, arcuatum, te- 

 nue, integrum : mandihulcB 

 asquales. 



Pollex longiusculus, gracilis : 

 digiti exteriores insequales. 



Ales breves, rotundatae 

 Cauda ascendens. 



Beak lengthened, cylindric, 

 arcuated, thin, intire : 

 mandibles equal. 



Hinder toe lengthened, 

 slender: exterior toes un- 

 equal. 

 Wings short, rounded. 

 I Tail ascending. 



M. Vieillot places this genus amongst the 

 Creepers : the species all inhabit America. 



Sp. 1. Th. Ludovicianus. 



Sylvia Ludoviciana. Steph. v. x. p. 713. — North America. 

 Sp. 2. Th ? torquatus. 



Sylvia torquata. Vieill. Ois. de V Amer. Sept. ii. 38. — Sylvia 

 Americana. Steph. ». x. 611. — North America. 

 Sp. 3. Th? Pinus. # 



Sylvia Pinus. Steph. v. x. 737. — North America. 

 Sp. 4. Th? Americanus. 



Parus Americanus. Steph. v. x. 43. — North America. 



