186 



CERTHIAD^. 



middle: the feathers of the tail are brown at their 

 base and tips, and black in the middle : the throat 

 and the cheeks are dull white : the breast grey : the 

 feathers of the rest of the under parts are white in 

 the middle, and striped longitudinally on the edges 

 with a small brown bar : the under tail-coverts are 

 isabella-colour, marked with large transverse brown 

 spots. 



GENUS CCXXXIV.— ORTHONYX, Temminck. 



Rostrum brevissimum, com- 

 pressum, fer^ rectum, 

 apice emarginatum. 



Nares laterales, in medio 

 rostri sitae, apertas, setis 

 tectae. 



Aloe brevissimae : remiges 

 quinque primores cunei- 

 formes, sextae longissimse. 



Cauda lata, elongata, rec- 

 tricibus rigidis, acutis, 

 apicibus prolongis. 



Pedes mediocres: tarsi di- 

 gitus medius longiores, 

 hie et exterior sequalis: 

 wngues digit! longiores, 

 validi, subarcuatae, la- 

 teratim sulcatae. 



Beali: very short, compressed, 

 nearly straight, notched at 

 the tip. 



Nostrils lateral, placed in the 

 middle of the beak, open, 

 clothed with bristles. 



Wings very short : the first 

 five quills wedge-formed, 

 the sixth longest. 



Tail broad, elongated, its 

 feathers stiff, acute, the 

 tips prolonged. 



Legs moderate : tarsi longer 

 than the middle toe, which 

 is equal to the exterior : 

 the claws longer than the 

 toes, short, somewhat bent, 

 laterally grooved. 



Sp. 1. Or. maculatus. 



Ob. obscure-fiisca supra nigro macidata; mas guld rufd nigra 

 marginatd; iadmina, guld alba. 



