370 BULLETI-N 50, UNITED STATES NATIONAL MUSEUM. 



squamxcristatus) , distinctly ridged, nearly straight to near tip, where 

 gradually decurved, the tip of maxilla very minutely uncinate; gonys 

 longer than mandibular rami, very faintly convex; maxillary tomium 

 straight, minutely notched subterminally. Nostril exposed, longitu- 

 dmally narrowly elliptical, overhung by broad membrane. Rictal 

 bristles well developed, reaching more than halfway to tip of bill; 

 feathers of chiil" and frontal antife with distinct bristly tips, those of 

 the latter extending across and much beyond nostrils. Wing mod- 

 erate or rather large, rounded; sixth and seventh primaries longest, 

 the eight and fifth, successively, but little shorter, the ninth about 

 equal to fourth, the tenth (outermost) shorter than first; longest 

 primary exceeding secondaries by less than length of exposed culmen. 

 Tarsus slender, about two-sevenths to nearly one-third as long as 

 wing, the divisions of the acrotarsium obvious on close inspection, but 

 very indistinct; middle toe, without claw, about half as long as tarsus, 

 its basal phalanx wholly united to outer toe, united for most of its 

 length to inner toe; outer toe, without claw, reaching nearly to termi- 

 nal joint of middle toe, the inner toe decidedly shorter, barely reach- 

 ing to middle of subterminal phalanx of middle toe; hallux slightly 

 longer than inner toe, its claw shorter than the digit; all the claws 

 moderately curved, sharp, much compressed. 



Coloration. — Plain olive-green above, the wings dusky with light 



olive-green edgings, the tips of middle and greater coverts and edges 



' of tertials 3-ellowish; crest black, the feathers margined with gray or 



tipped with cinnamon or rufous; under parts pale yellow posteriorly, 



streaked grayish and yellowish white anteriorly. 



Range. — Costa Rica to Venezuela and Peru. (Five species.) 



KEY TO THE SPECIES AND SUBSPECIES OF LOPHOTRICCUS. 



a. Feathers of crest margined with gray or olive. (Upper Amazon Valley.) 



Lophotriccus spiciferus (extralimital).a 

 aa. Feathers of crest margined with cinnamon-rufous or cinnamon (browner on fore- 

 head and anterior portion of crown.) {Lophotriccus squamseeristatus.) 



a T[odirostrum] spiciferum Lafresnaye, Rev. ZooL, Oct., 1846, 363 (Brazil). — Todiros- 

 trum spiciferum Sclater, Proc. Zool. Soc. Lond., 1855, 67 (in text), pi. 84, fig. 2.— 

 Euscarthmus spicifer Sclater and Salvin, Proc. Zool. Soc. Lond., 1866, 187 (Lower 

 Ucayali, e. Peru). — L[ophotriccus] spicifer Berlepsch and Taczanowski, Proc. Zool. Soc. 

 Lond., 1883, 553, footnote. — Lophotriccus spicifer Taczanowski, Orn. du Perou, ii, 

 1884, 229; Sclater, Cat. Birds Brit. Mus., xiv, 1888, 87.— Colopterus galeatus (not 

 Motacilla yaleata Boddaert) Taczanowski, Proc. Zool. Soc. Lond., 1882, 18 (n. e. Peru). 



iMphotriccus subcristatus Allen, Bull. Am. Mus. N. H., iv, Apr. 6, 1892, 53 (El 

 Pilar, Venezuela; coll. Am. Mus. N. H.), belongs to the genus Colopteryx and should 

 be known as Colopteryx galeatus subcristatus, or perhaps merely as C. galeatus, since its 

 distinctness from the latter is doubtful. 



