354: Mr. Swainson on several new groups in Ornithology. 



Family Certhiadce, 

 Sub-family Certhiana. 

 Cauda gradatay rigida, 



DENDROPLEX. 



Rostrum rectissimum. 



Ales mediocreSy roiundatce ; remigibus S'w, Ata^ et 5'^ longissimis. 



I know not whether the type of this genus has been described. 

 The living bird has all the manners of a Picus. Except in its 

 perfectly straight bill, it differs not from Dendrocolaptes, 



DENDROCOLAPTES. Ill 



Rostrum longiusculum ; sub-curvatum^ mandibula superiore cpice 

 emarginatdy vel abrupte deflexA, 



Bill lengthened ; the upper mandible with the tip notched or 

 abruptly deflexed. 



The same uncertainty prevents me from being able to quote a 

 typical example of this group, as it is now restricted, although I 

 possess four species which clearly belong to it. 



XIPHORHYNCHUS. 



Rostrum gracile, elongatum^ compressissimum^ falcatum^ immar- 

 ginatum. 



Bill slender, long, much compressed, falcated and entire. 

 Type. Dend. procurvus, Temm., Pi. col. 28. 



By this form, the passage is marked from Dendrocolaptes to 

 Certhia, The species appear numerous. I possess four from 

 Brazil, and three from Mexico. 



OXYURUS. 



Rostrum mediocre, gracilcy rectum, compressum, integrum ; euU 

 mine leviter arcuato. 



