168 Mr. Swainson on several new groups in Ornithology, 



of flight, and strength of foot, separate these birds from the ty- 

 pical genera ; while the strength and curvature of the hiud claw 

 forbids us to associate them with the true Motacillce, 



SYNALLAXIS. (Vieill.) 



Rostrum mediocre^ fortiusculum, compressum^ subintegrum ; 



culmine leviter arcuaio : rictu imberbi. 

 Alee brevissimce, rofundatce ; remigibus l^«, 2*^^, et ^^^^ gradatis^ 



4td^ ^td el Qtaj-QY-^ wquaUbus^ longissimis. 

 Pedes suhfortes ; tarsorum squamis later alibus frequentibus. 

 Cauda elongata, gradaia vel cuneata. 



Bill moderate, rather strong, compressed, nearly entire, culmen 

 slightly curved ; mouth without bristles. Wings very short, 

 rounded ; the first, second, and third quill graduated, the 

 fourth, fifth, and sixth nearly equal, and longest. Tail broad, 

 graduated, or cuneated. Feet rather strong; the lateral scales 

 of the tarsi numerous. 



Type. Synallaxis rutilans. Teraminck, Pi. col. 227, f. 1. 



The characters of this genus are here introduced, that they may 

 be brought more immediately into comparison with the next. To 

 this group the Malurus garrulus (Zool. 111. pi. 138.) will un- 

 doubtedly belong. All the species are from tropical America. 



DRYMOICA. 



Rostrum gracile, acututn^ immarginatum ; culmine arcuato. 

 Aloe breviusculcB^ rotundatce ; remige l"^^ brevissimd ; 2^^ et 3ti'' 



gradatis ; 4*^, 5'^ et 6^^ cequalibus^ longissimis. 

 Cauda elongata, gradata. 

 Pedes longiusculiy tarsorum squamis anterioribus 5 tnequalibuSy 



later alibus integris. 



Bill slender, acute, entire ; culmen arched. Wings rather short, 

 rounded ; the first quill shortest, the second and third gra- 

 duated, the fourth, fifth, and sixth equal, and longest. Tail 



