138 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xii, 



width, the former is outwardly oblique in course, slightly angled inwardly in the cell, not 

 prominently bent as in eglanterina; the latter is bent outward below costa, then slightly sinate 

 to inner margin, at times very close to antemedian band; a large black discocellular patch, often 

 coalescing basallj- with postmedian band, and generally more oblong than in eglanterina; a pale 

 central lunule may or may not be present; a terminal series of black dashes along the veins, 

 more or less triangular in shape and usually attaining the postmedian band; costal and terminal 

 borders narrowly black. 



Secondaries either with a black antemedial band or the whole basal area of wing black; a 

 broad postmedial black band angled opposite the cell, and a large discocellular black oblong 

 patch the ends of which are mostly coalescent with the postmedian band, inclosing a pale 

 yellow spot situated in the angle of the band; terminal area of wings as on primaries; $ similar 

 to S ; the black banding rather broader and more diffuse, giving a general blacker appearance. 

 Underside in both sexes practically identical with the upper side, ground color slightly whiter. 

 Expanse, c? 52-62 mm.; 9 5S-69 mm. There is considerable tendency- toward melanism, 

 shown in the broadening of the black bands and the suffusion of the lower portion of the median 

 area with black. 



Described from 17 S S , 3 ? ? in collection Barnes, from Glenwood Springs, Colo. (Barnes), 

 (August 8-30); southern Utah (Poling), (August); Reno, Nev. (Barnes). — J. McDunxough.] 



P. hera was taken by Snow in Gallinas Canon, N. Mex. (Cockered in litt.). 



[Mr. A. L. Siler wrote to Dr. Packard in 1890, that between Mount Pleasant and Spring 

 City, Utah, on a blustery day, very cold for the season, he came on a flock of black and white 

 moths (P. hera); they were as abundant as red-legged grasshoppers. One was sent to Dr. 

 Packard.] The young were received from Mr. C. A. Wiley, Miles City, Mont., May 29, 1896. 



Larva. — Stage III: Length 12-15 mm. They are exactly as in stage IV?, but without 

 the lateral whitish line. The body is not very thick and is more as in H. maia than in A. io. 



Stage IV?: Length 25-30 mm. Head shining black, the clypeus anterior rather prominent 

 and full ; body dud black, the only markings being a lateral very sinuous cream white somewhat 

 livid line, interrupted by the tubercles, and extending from the third thoracic to the eighth 

 abdominal segment. The two dorsal prothoracic spines are like the lateral ones, while the two 

 dorsal meso- and meta-thoracic spines are shorter by about one-fourth and with more numerous 

 spines at the base (as in the other species), and the same series along the abdomen are about 

 one-half as long as the lateral ones, with thickset spines, no scattered ones as on the lateral 

 spines. All the spines and spinulcs are black, but the hairs arising from them are white, giving 

 the animal a frosted appearance. The two dorsal spines on the third thoracic segment have 

 one spinule bearing a hair, the abdominal ones (1-S) have four to five such white piliferous 

 spinules. 



The caterpillar in this stage does not prick when rougldy handled. After teasing one and 

 roughly handling it for half an hour I could not detect the eversible glands, and they seemed at 

 this age to be functionless. 



Habits. — Mr. Wdey writes me that the caterpillars "hatch in the fad or very early in the 

 spring and make their first appearance about this time (May 22). I have seen two colonies 

 of them on the sage brush so far this spring. Hera is diurnal in flight. I believe I sent you 

 some of them once, stating that I believed them to be Coloradia pandora, but have reared them 

 since and to my surprise they turned out to be hera. The eggs are deposited at or under the 

 root stalk of the sage brush in a cluster somewhat simdar to that of Olisiocampa. I have 

 never seen larvae of C. pandora nor do I know its food." 



[The following description by Dr. Packard has a marginal note in pencd 'P. eglanterinaf 

 from Dyar (from Montana?) — probably hera?" I wrote Dr. Dyar, who says, "The larvae from 

 Montana from C. A. Wiley were never bred or connected with adults, I think."] 



Stage I : Ten living examples described May 29. Length 4 mm. Body rather longer and 

 slenderer than young H. maia or A. io. Head a little wider than the body, the latter a little 

 thicker on the thoracic segments than toward the end of the abdominal region. Head shining 

 black, with scattered golden-yellow hairs of unequal length; anterior edge of clypeus pale. 



