Mr. Swainson on several new groifj^s in Ornithology/, 355 



Alas bremssimce^ rotundatce. 



Cauda mediocris, lata, gradata ; redricibus sub-rigidisy q^riqitS 

 acuminatis. 



Bill moderate, slender, straight, compressed, entire ; culmen 

 slightly arched. Wings very short, rounded. Tail moderate, 

 broad, graduated ; the feathers rigid, and ending abruptly in 

 naked points. 



I believe no species of this form has been described : it occurs 

 in the tropical latitudes of America. The feet are rather large 

 and tolerably strong ; but the hind toe is not particularly de- 

 veloped. The habit of the whole bird resembles that of a Sylvia, 



SITTASOMUS. 



Rostrum gracile, parvum, rectum, fere emarginatum ; culmine 



leviter arcuato, 

 AlcB mediocres, 

 Cauda sub-elongata ; rigida. 



L 



Bill small, slender, straight, slightly notched; culmen rather 



curved. Wings moderate. Tail lengthened, rigid. 

 Type. Hend. sylviellus, Temm., PI. col. 72. f . 1 ? 



By this form the genera Oxyurus and Xenops appear to be 

 brought together. It possesses the rigid scansorial tail of Dew- 

 drocolaptes, and the more feeble bill of Xenops, 



Sub-family Tichodromina ? 



LOCHMIAS. 



Rostrum mediocre, gracile, compressum, sub-arcuatum, integrum. 

 AlcB breves, rotundatce; remige Imd brevi; 3'w, 4*^, et b^^ sub' 



cequalibus, longissimis. 

 Cauda mediocris, lata, rotundata, debilis. 

 Pedes graciles ; tar sis elevatis, squamis anterioribus infrequenti' 



bus, lateralibus obsoletis, posterioribus frequentibus, parvit ; 



halluce digito medio breviore, ungue curvato. 



z 2 



