90 PEOCEEDTNGS OF THE NATIONAL MUSEUM. vol.xxi. 



entirely wanting. Such examples will be apt to fall with occiden talis 

 in the table, especially as tlie latter species sonietinir^s tends to have a 

 slight connection between the ordinary spots. The present species, 

 however, is larger, the wings are comparatively a little broadei- and 

 square, the ground color is different, and the primaries are not so even 

 as in occidentalis. This latter species also tends to lose tlie orbicular, 

 which is always distinct in the new form, and finally the very dark 

 smoky secondaries in this species give it an altogether different appear- 

 ance. The head structure is like that of loheliae in all essential features. 

 The legs resemble those of fiircif era, but the femur is comparatively a 

 little shorter and stouter. The harpes of the male are long, slender, 

 and just a little enlarged before the tip. The clasper is stout, the 

 superior process moderately curved and quite heavy. There is no 

 finger-like process from the upper margin. Types are in the collections 

 of the U. S. National Museum. Cornell University, Kutgers College, 

 and Messrs. Graef and Doll. 



ACRONYCTA MANITOBA, new species. 

 (Plates XII, tig. 1, female adult; XVII, fig. 24, leg; XX, fig. 14, male genitalia.) 



Ground color a dark bluish ash gray and very powdery. Head and 

 thorax with the usual lateral line, which extends to the ends of the 

 pntagiae in this case. Primaries with all the ordinary markings trace- 

 able. Basal line geminate, blackish. Transverse anterior line gemi- 

 nate, blackish, outwardly oblique. Median shade extending obliquely 

 from thecosta over the reniforra, and then parallel with the transverse 

 posterior line, and, vaguely defined, to the inner margin. Transverse 

 posterior line geminate, the inner line smoky, the included space white, 

 the outer line narrowly black and a little luuulated. As a whole, 

 bisinuate. There is an irregular, indefined, pale subterminal line. 

 There is a series of black dots at the base of the fringes, beyond which 

 the latter are cut with dusky, and there is also a series of blackish 

 rays, which extend inwardly from these terminal dots. The black 

 basal dash is heavy and reaches the outer portion of the transverse 

 anterior line. There is an obvious black dagger mark which crosses 

 the transverse posterior line opposite the cell, and another heavy mark 

 of the same character in the submedian interspace. Orbicular round, 

 of good size, black ringed, white centered. Reniform moderate in 

 size, kidney shaped, more or less obscured by the median shade. These 

 spots are inferiorly tied by a heavy black mark. Secondaries in the 

 male pure white, a little soiled outwardly toward the tip; beneath 

 smooth, only a little powdery, with a vaguely indicated exterior line 

 and a better marked discal spot. 



Expanse, 1.00 to 1.70 inches (40 to 42 mm.). 



Habitat. — Winnipeg, Manitoba (Hanham); Glenwood Springs, Colo- 

 rado, July 16 (Barnes). 



1 have two males of this species, one of them a perfect specimen, 



