39 



ber, as in M. Stretch's figure. (Zygaenidae and Bombyc, N. A. 

 Page 224, Plate 9.) 



3 ? Prescott, Arizona, i $ . Dalles, Oregon. 



Type. Coll. Hy. Edwards. 



Arctia Achaia, Bdv., var. barda. Hy. Edw. 



A dark form of A. Achaia. in which the sub-basal transverse 

 line of primaries is wanting, and the rest of the lines are much 

 narrower than in the usual form. The secondaries are quite 

 black at the base, along the costa, and very broadly so upon the 

 posterior margin — the red markings being reduced to a moder- 

 ately broad and deeply dentate band, touching the anal margin, 

 and surmounted by a small ovate discal spot. In a second speci- 

 men, the red band encloses a small black spot. 



2$. North. Calif. Dalles, Oregon. 



Type. Coll. Hy. Edwards. 



Antarctia Punctata, var. proba. Hy. Edw. 

 Under this name I call attention to a form of the above 

 species, which differs from the type by having the secondaries 

 always concolorous with the primaries in both sexes, and by the 

 maculate band being more broken up into spots. It is the 

 mountain form of this insect, all the specimens I have examined 

 having come from the higher Sierra Nevada, where it appears to 

 be perfectly constant in color and marking. 



3 (^ 2 ? . Truckee, Summit Station and Bear Valley. Sier. 

 Nev., Cal. 



Types. Coll. Hy. Edwards. 



Halesidota Ingens-. Hy. Edzv., n. sp. 



Allied to H. Sobrina, Stretch, but differing by its extreme 

 size and some changes in the form and number of the spots. 

 Head at base, front and sides of thorax, yellowish white ; middle 

 of thorax and front of the head rich brown, as also on the palpi, 

 chest, and base of tibiae. Abdomen above, pale buff with 

 brownish band at the sides, and dull white beneath. Primaries 

 rich brown, with four rows of white spots, the basal one very 

 irregular in shape, and composed of three spots, the sub-basal 

 one of four spots, and the median submarginal rows are oblique, 

 and are composed of six and seven spots respectively. Between 

 the median and sub-basal row is a large sub-oblong spot on the 

 costa, and the margins have a row of small triangular spots at 

 the termination of the nervules. Secondaries sordid white, 

 yellowish at the base, with a small discal spot, and a row of con- 

 fluent marginal spots, from the apex to the ^median nervule, black. 

 Beneath, the markings of the upper side are faintly repeated. 



Exp. wings., 2.50 inch. 



I ? . Prescott, Arizona. 



Type. Coll. Hy. Edwards. 



The largest species of the genus known to me. 



