500 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Genus HELEODYTES Cabanis. 



Campylorhynchus (not Campylirhynchus Megerle, 1821) Spix, Av. Bras., i, 1824, 

 77. (Type, C. seolopaceus Spix, = Tardus variegnius Gmelin. 1 



Kampylorhyndms Spix, Av. Bras., i, 1824, pi. 79. 



" Kampilorhynchus, Lesson." 



Hekodytea « Cabanis, Mus. Hein. , i, 1850, 80. (Type, Furnarius griseus Swainson. ) 



Buglodytes Bonaparte, Compt. Rend., xxxviii, 1854, 57. (Type, Fumarins griseus 

 Swainson. ) 



(?) OdontorhynchusT?EhZEi,T<i, Orn. Bras., i, 1868, 67. (Type, 0. cinereus Pelzeln. ) 



Medium sized to rather large Troglodytidse (wing 63-85 mm.), 

 with the nostril of variable form (small, roundish, nonoperculate, 

 beveled into anterior end of nasal fossa, the latter otherwise covered 

 with naked integument, longitudinal and operculated, or variously 

 intermediate) and with the tail nearly as long as wing. 



Bill nearly as long as head, stout, more or less, though never 

 stronglj^, decurved terminally; exposed culmen longer than middle 

 toe (without claw), straight at base, but soon gradually and gently 

 decurved, more strongly so terminally; gonys decidedly shorter than 

 distance from nostril to tip of maxilla, straight, or sometimes almost 

 inappreciably concave terminally; maxillary tomium decidedly but 

 not strongly concave, without trace of subterminal notch; depth of 

 bill at frontal antise about equal to its width at same point. Nostril 

 variable; sometimes small, roundish, nonoperculate, beveled into 

 anterior end of nasal fossa, bordered behind and at least partly above 

 by membrane, which separates for a considerable distance (equal at 

 least to the length of the nostril) the nostril from feathering of the 

 latero-frontal antise; sometimes longitudinal, narrowly pyriform, 

 overhung by a prominent operculum, and in contact posteriorly 

 with latero-frontal feathering. Rictal bristles obvious, though only 

 one or two are well developed. Wing moderate or rather short, 

 much rounded; seventh, sixth, and fifth primaries longest, the 

 eighth and fourth but little shorter; ninth about as long as seconda- 

 ries, less than twice as long as tenth. Tail nearly as long as wing, 

 decidedly rounded, the rectrices with tip broadly rounded. Tarsus 

 decidedly longer than exposed culmen, less than two-fifths as long as 

 wing, stout, the acrotarsium very distinctly scutellate, the jslanta tarsi 

 with both extremities scutellate, the heel joint also with distinct scu- 

 tella; middle toe (without claw) about two-thirds as long as tarsus; 

 lateral toes short, of nearly equal length, the inner (without claw) 

 reaching to, the outer slightly beyond, middle (subterminal) joint of 

 middle toe; hallux (without claw) slightly longer than outer toe 

 (without claw), much stouter than anterior toes, its claw decidedly 

 shorter than the digit; claws without lateral grooves; basal phalanx 



a"'sXod, TO, Wieae, Bruch." 



