Rldgmiy — Formicariidse, Furiiariidf^ and Dendrocolaptidx. 71 



Hylopezus gen. nov. (Formicariidic.) 



Related to Grallaria Vieillot but nasal fosspe longer and narrower (dis- 

 tance from anterior end to base of exposed culinen equal to about two-tbirds 

 the distance from same point to tip of maxilla) ; nostrils more linear and 

 separated from frontal feathering by naked integument ; much weaker and 

 more slender (nearly terete) bill, etc. 



Type. — Grallaria perspiciUata Lawrence. 

 ( "TXij, a wood, forest; 7rei'6j, walking.) 



Premnornis gen. nov. {Furnariidie.) 



Related to Margarornis Reichenbach but tail excessively graduated 

 (lateral rectrices less than half as long as middle ]xiir), with tips of rec- 

 trices not distinctly acuminate, the minute points not distinctly protruded ; 

 wing less than four times as long as tarsus ; inner webs of remiges with an 

 extensive basal area ( instead of sub-basal band ) of ochraceous. 



Type. — Margarornis guttata Lawrence. 



( Wpifivov, a stump, tree trunk ; 6pvfs, bird. ) 



Drioctistes gen. nov. (Furnariidw.) 



Related to Phacellodomus Reichenbach and Phaceloscenua Ridgway but 

 tarsus decidedly more than one-third as long as wing, the latter about 

 two-thirds as long as tail; mesorhinium elevated and extremely com- 

 pressed. Differing from Thripojihaga Cabanis in much longer tarsus, 

 greater anterior extension of latero-frontal feathering, unstreaked plum- 

 age, and other characters. 



Type. — Thripophaga sclateri Berlepsch. 



(Aploi, a copse, thicket; ktIo-ttis, a settler. ) 



Phaceloscenus gen. nov. (Furnariidse.) 



Related to Phacellodomus Reichenbach but wing relatively shorter ( four- 

 fifths as long as tail ) ; tail graduated for nearly two-thirds ( instead of only 

 half) its length; tarsus not longer than middle toe with claw; bill rela- 

 tively longer and narrower, and feathers of chest without thickened or 

 widened shafts. 



Type. — Anumbius striaticoUis D'Orbigny and Lafresnaye. 

 (<i>dKeXos, a bundle; ctk-^vos, a hut, tent.) 



Schoeniophylax gen. nov. (Furnariidie.) 



Related to Synallaxis Vieillot but tail nearly twice as long as wing, and 

 vipper parts streaked. 



Type. — Sylvia phryganophila Vieillot. 



{'Exoivid, a bunch of rushes; <p(i\a^ a watcher, guard, sentinel.) 



Acrorchilus gen. nov. (Furnariidx.) 



Related to Asthenes Reichenbach but bill much stouter, with culmen 

 much more strongly curved; tarsus mucli less than one-third as long as 



