130 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Hypocnemis naevoides Franrztvs, Journ. fiir Orn., 1869, 306 (Costa Rica). 
Hypocnemis nevoides Zevep6n, Anal. Mus. Nac. Costa Rica, i, 1887, 115 (Jimé- 
nez, Pacuare, and Angostura, Costa Rica). 
Hylophylax nevioides Carrier, Ann. Carnegie Mus., vi, “Aug. 29” (=Sept. 
7), 1910, 619 (Costa Rica; crit.; habits). 
Hypocnemis arate: capnitis Ras, 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., sér. iv, i, 1854, 132. (Type 
not mentioned; nomen nudum.) : 
Anoplops 4 Capants and Herne, Mus. Hein., ii, July, 1859, 9. (Type, Turdus 
rujigula Boddaert.) 
Medium-sized Formicariide (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 antiz 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 abruptly decurved, the tip of maxilla 
more or less distinctly (but not strongly) uncinate; tomia straight, 
slightly but distinctly notched subterminally; gonys strongly convex 
and prominent basally, gently or faintly convex and ascending 
terminally. Nostril exposed, posteriorly in contact with feathering 
of loral antiz, narrow and longitudinally ovate (slit-like in A. rufigula) 
overhung by a broad membraneous operculum. Rictal 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 slightly 
more than three-fifths as long as wing, slightly rounded, the rectrices 
(12) rather narrow (A. rufigula) to rather broad (A. bicolor, 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 second 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 
@ “Von dvordog (unbewaffnet) und &¢ (Gesicht).’? (Cabanis and Heine.) 
