72 Ridgivay — Formicariidse, Furnariidas and Dendrocolaptidse. 



wing; and nostril and nasal operculum uncovered for much the greater 

 part. Related also to Synallaxis Vieillot, but with 12, instead of 10, 

 rectrices. 



Type. — Synallaxis erythrops Sclater. 

 {S.Kpos, pointed; opxi^os, a wren.) 



Hyloctistes gen. nov. {Furnariidas.) 



Related to Philydor Spix but bill relatively much longer (exposed cul- 

 men longer than tarsus). Difiering from Automolus in more extensive 

 cohesion of anterior toes, the basal phalanx of middle toe wholly united 

 to botli lateral toes. 



Type. — Philydor virgatus Lawrence. 



{"TX-q, a wood, forest; Kria-T-qs, a settler.) 



Rhopoctites gen. nov. {Furnariidx.) 



Related to Automolus Reichenbach but bill much stouter, less com- 

 pressed ( its width at latero-frontal antiie nearly equal to its deptli at same 

 point), distinctly uncinate; shafts of rectrices more rigid at tip. 

 Type. — Philydor rufo-hrunneus Lawrence. 



( 'Pun// {'poiirbs), bush, underwood, brushwood; ktIttjs, a colonist, 

 inhabitant. ) 



Automolus cervinigularis hypophseus subsp. nov. 



Type from Guayabo, Costa Rica (Rio Reventazon). No. 2QS),5:V2 TJ. S. 

 Nat. Mus. March 19, 1908. Adult male. Museum-Zeledon Expedition, 

 Francisco Basulto, collector. 



Similar to A. c. cennviynlaris but coloration decidedly darker, espe- 

 cially under parts of body ( which are Isabella color medially, darkening 

 laterally into deep bufly olive and contrasting strongly and abruptly with 

 the but!' (jr ochraceous-bull' of thn)at. 



Acrorchilus erythrops griseigularis subsp. nov. 



Type from San Antonio, Rio Cali, n. w. Colombia (altitude 5,800 ft.). 

 No. 20,()7;{, coll. E. A. and O. Bangs. Adult male. November 4, 1907. 

 Mervyn (t. Parker, collector. 



Similar to A. erythrops rufiyenis (Lawrence) of Costa Rica but rufous of 

 head much more extensive, involving whole of occiput and nape, and 

 color of under parts very different, the cliest being mouse gray, i)assing 

 through nearly ash gray on thniat into grayish white on chin, only the 

 flanks and under tail-coverts being light olive-brown or huffy olive (the 

 general color of under parts in A. e. erythrops and A. e. rvjigenis). Diflers 

 from A. erythrops rrytJirops in color of under parts and in ditierent color 

 (bright cinnamon-rufous instead of russet brown) of middle pair of 

 rectrices. 



