NORTH AMERICAN LEPIDOPTKRA. (i7 



marked only by an ol)li((ne fuscous streak over the costal region. T. p. line 

 traceable for its entire length, single, fuscons, outwardly oblique from costa, 

 forming nearly a right angle over the cell and inwardly evenly oblique to the 

 hind margin, less distinct at this part of its course. The s. t. line is only incom- 

 pletely marked by the interruption of a series of interspaceal black marks, 

 which, in the fuscous central region, are very incompletely relieved by gray 

 scales. A pale, followed by a dusky terminal line. A black streak at base, at 

 the end of which is the small loop-like daviform, which nearly touches the t. p. 

 line. The ordinary spots are fused, narrowly black and white ringed, the centre 

 fuscous. Secondaries dirty white at base, with a snu)ky outer nuirgin and all the 

 veins smoky. Beneath, primaries smoky, relieved by a whitish powdery shade 

 beyond the middle, through which is a dusky transverse line, distinct only a 

 short distance from costa. Secondaries white, powdered with fuscous over the 

 costal region, a more distinct smoky outer band not reaching the anal angle, a 

 punctiform extra-median line and a small, blackish, discal lunule. Expands 

 34 mm.; 1.36 inches. 



Hah. — Park County, Colo., Bruce. 



Tins species closely resembles chandleri at first sight, and so I re- 

 garded it for some time, until abundant material of each proved 

 their distinctness. The new species is less definitely marked, has an 

 even t. p. line, and the series of sagittate marks preceding the s. t. 

 line is very different. Finally, the sexual characters of the male do 

 not at all resemble those of clmndleri, but are very close to those of 

 0. angudus figured by me on PI. VIII, fig. 7, Trans. Am. Ent. Soc. 

 xvi (1889). Several specimens are in collections ; type in coll. U. 

 S. National Museum, Rutgers College and Neumoegen. 



Oncocnemis nig^roeapiit n. sp. (PI. i, first row, fig. 4)— Head blackish 

 brown, palpi whitish. Thorax and general color of primaries a dull, slightly 

 yellowish ashen gray. Collar at base with a faint reddish tinge, this shade 

 limited by a narrow, black, transverse line. Primaries without transverse lines, 

 black powdered, all the veins marked with black scales, and a series of small 

 interspaceal black dashes at outer margin. A black dash from base through the 

 submedian inierspace, nearly to the middle of the wing; another, beginning in 

 the middle of the cell and extending through and beyond it to the outer margin, 

 sometimes interrupted on the reniform. A pale line at the base of tlie concolor- 

 ous fringe. Secondaries white, veins marked with fuscous, and a fuscous line at 

 base of fringes. Beneath whitish, powdery, the primaries more densely so : all 

 wings with a discal spot. Expands 32 mm. ; 1 28 inches. 



Hub. — Colorado, Bi-uce. 



This species belongs to the group atrieo/laris, and seems, fronj the 

 description, to be allied to grkeicollis Grt., which is unknown to me; 

 but which can scarcely be the present form since it is said to have 

 the median lines marked and is not said to have a basal dasli. 



Two specimens, S and 9 numbered 296 and 181, respectively, 

 collected by Mr. Bruce, are before me, and are the types. 



TRANS. AM. ENT. SOC. XXI. MARCH, 1894. 



