92 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Habitat. — Tucson, Arizona; near Hot Springs, Las Vegas, New 

 Mexico, 7,()(>0 feet, July. 



This species is easily distinguishable. The distinct yellow disk of 

 the thorax, the yellowish patch at the extreme base of the wings and 

 in the reuiforin, and the general yellowish tinge beyond the transverse 

 posterior line are all characteristic. 



ACRONYCTA STRIGULATA, new species. 

 (Plates XII, fig. (J, foiiiale ndiilt; XVIII, fig. 2G, leg; XX, tig. 16, miile genitalia.) 



Ground color an even bluish ash gray, very finely powdered. Head 

 and thorax of the ground color; thorax with the disk smoky, but 

 with a yellowish tinge in the male. Primaries with the transverse 

 maculation more or less obsolete, and veins, being more or less white, 

 give the wing a longitudinally strigate appearance, liasal line want- 

 ing in the specimens before me. Transverse anterior line marked on 

 the costa by a pair of smoky lines, which are not traceable beyond their 

 inception. The median shade is indi(;ated by an oblicpie smoky streak. 

 The transverse posterior line is very slender, blackish, lunulate, and 

 best marked in the submediaii inters[)ace. There is a series of black 

 terminal dots, beyond which the fringes are cut with black, and from 

 which rays are sent inwardly. Three of these rays just below the apex 

 are (luite prominent, the third of them forming a dagger mark which 

 reaches to and extends a little beyond the transverse posterior line. In 

 the submedian interspace there are two of these rays, the upper of 

 which is shaded and connected by a smoky shade with the lower, which 

 forms a little dash and extends across the transverse posterior line at 

 this point, nearly meeting the long basal dash, which in this case is 

 superiorly margined by the median vein. The ordinary spots are very 

 indefinite. The orbicular is usually white or nearly so, but is not well 

 margined and mtiy be entirely obsolete. The reniform is of moderate 

 size, kidney shai)ed, and only marked inferiorly. There is a carved 

 black streak which indicates a connecting line between the ordinary 

 spots, and to this point the obli(jue shade from the costa extends. 

 Secondaries white, with the fringes a little dusky at base. Beneath 

 white, with a more or less well-marked outer line and discal spot. 



Expanse, 1.30 to 1.55 inches (34 to 39 mm.). 



Habitat. — Colorado (Bruce); Glen wood Springs in July (Dr. Barnes). 



I have three males and two females before me which do not vary, 

 excei)t in size, and that very slightly. The species is smaller than 

 thoracica and is an intensification of the characters found in that 

 species. The practical absence of all the transverse maculation, the 

 small size, and peculiar blue color of the primaries will serve to iden- 

 tify this form. The head is convex without being prominent, the femur 

 is well developed, the tibia rather slight, the epiphysis attached very 

 close to the base, but extending almost to the tip. The haipes of the 

 male are broad and rather short, somewhat dilated and oblique near 



