Among the parasites so far found to attack and destroy Aletia argillacea Hübn., aside from two not reared to the perfect state, are the following: Obtained from the egg, Trichogramma pretisa n. sp. from the larva, Tachina aletiæ n. sp., and Sarcophaga sarraceniæ Riley ; from the pupa, Pimpla conquisitor (Say), Cryptus nuncius Say, Chalcis ovata Say and, Cirrospilus esurus, n. sp.

I received from Mr. Mead, 18th Aug., 1878, Nevada, several eggs and newly hatched larvæ of this species. The eggs had been obtained by ccnfining a female on Violet, and the female was also sent that I might identify the species. The larvæ became lethargic immediately after leaving the egg, as is the case with all our larger Argynnids whose history is known (at least in the late summer brood).

Hadena passer.

Mamestra passer Guen., Noct. I, 195.

Luceria loculata Morr., B. B. S. N. S., 2, 110.

I have received from M. Achille Gueneé an outline drawing of his Mamestra passer, and with the help of his description am enabled to make the above identification. The black marks tying the reniform to the t. p. line are variable, sometimes wanting; the color varies from pale reddish brown to dark brown ; the claviform is thick and usually solid, but sometimes open ; the lines are usually effaced, but sometimes quite noticeable ; the ornamentation is exceedingly simple. The eyes are naked, so that, with several other species referred by Gueneé to Mamestra, as I have previously shown, this form should be placed in Hadena.