130 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Hypocnemis naevoides Frantzius, Journ. fiir Orn., 1869, 306 (Costa Rica). 



JHypocnemis nsevoidcs Zeled6n, Anal. Mus. Nac. Costa Rica, i, 1887, 115 (Jime- 

 nez, Pacuare, and Angostura, Costa Rica). 



Hylophylax nsevioides Carriker, Ann. Carnegie Mus., vi, "Aug. 29" (=Sept. 

 7), 1910, 619 (Costa Rica; crit.; habits). 



Hypocnemis nsevioides capnilis Bangs, Proc. Biol. Soc. Wash., xix, July 30, 1906, 

 107 (Volcan de Miravalles, n. w. Costa Rica; coll. E. A. and O. Bangs). 



Genus ANOPLOPS Cabanis and Heine. 



Gymnopithys "Schiff" Bonaparte, Ann. Sci. Nat., s^r. iv, i, 1854, 132. (Type 



not mentioned; nomen nudum.) 

 Anoplops a Cabanis and Heine, Mus. Hein., ii, July, 1859, 9. (Type, Tiirdus 



rvfigula Boddaert.) 



Medium-sked Formicariidae (length about 135-145 mm.) with 

 second phaLanx of middle toe partly united to outer toe, tail less than 

 two-thirds (scarcely more than three-fifths) as long as wing, sub- 

 orbital and postocular regions naked, outstretched feet reaching 

 little if any beyond tip of tail, and plain coloration. 



Bill shorter than head, narrow, wedged shaped in vertical profile 

 (lateral outlines nearly straight), its width at frontal antise equal to 

 or greater than its depth at same point and equal to half the dis- 

 tance from nostril to tip of maxilla, or less; culmen distinctly ridged, 

 straight to near tip, where abruptl}^ decurved, the tip of maxilla 

 more or less distinctly (but not strongly) uncinate; tomia straight, 

 slightl}^ but distinctly notched subterminally; gonj^s strongly convex 

 and prominent basally, gently or faintly convex and ascending 

 terminally. Nostril exposed, posteriorly in contact with feathering 

 of loral an tiae, narrow and longitudinall}^ ovate (slit-like in A. rvfigula) 

 overhung by a broad membraneous operculum, liictal bristles 

 obsolete. Wing moderate or rather large, with longest primaries 

 projecting decidedly beyond secondaries; sixth and seventh, or 

 sixth, seventh and eighth, primaries longest, the tenth (outermost) 

 about three-fifths as long as the longest, the ninth about as long 

 (sometimes a little longer or shorter than) secondaries. Tail slightl}' 

 more than three-fifths as long as wing, slightly rounded, the rectrices 

 (12) rather narrow {A. rufigula) to rather broad {A. hicolor, etc.), 

 rounded terminally. Tarsus about one-third as long as wing, 

 booted (nonscutellate) or with scutella of acrotarsium very indis- 

 tinct; middle toe, with claw, nearly as long as tarsus; outer toe, 

 without claw, not reaching to middle of subterminal phalanx of 

 middle toe, the inner toe slightly shorter; hallux about as long as 

 inner toe but much stouter; middle toe united for whole of basal 

 and part of se^cond phalanx to outer toe, for half or more of basal 

 phalanx to inner toe; claws rather large and strongly curved, that of 

 the hallux decidedly shorter than the digit. Plumage full and 

 blended, that of rump and flanks more elongated and lax; feathers 



o "Von HvonXoc (unbewaffnet) uud wif) (Gesicht)." (Cabanis and Heine.) 



