In an article published in the Entomologist for May, 1873, I gave the results of my observations upon the genus Cynips, so far as they related to the agamous reproduction of certain species.

I showed that at least two-gendered species, C.q. operator O.S. and a species nearly related to, if not identical with, C. q. batatus Bassett, were followed in the next generation by a brood composed entirely of females.

The nearest known ally of this species is the European C. Brongniardellum, not C. calicella St., as I suggested before I knew Brongniardellum. Albanotella makes a large, somewhat tentiform mine, on the under surface of oak leaves (Q. obtusiloba and Q. alba); the mine is at first long, winding and Nepticuli-form, ending in the large tentiform blotch. The lanva, before leaving the mine, becomes pinkish red. In the breeding cage it pupates in a cocoonet which it spins on the surface of the leaves. I have never met with the pupa elsewhere, nor have I ever, although I have seen hundreds of the mines, found one on the upper surface of the leaf.

Last spring, while collecting beetles under the bark of decayed logs, I met with numbers of the larvæ of Arctia isabella (hairs brown in the middle, black at each end of larva,) about to spin up. Not knowing their hybernating habits, they had always baffled me, and under the impression that they would require another season to mature, had been turned loose. I collected some twenty, put them into a box with cotton and paper scrap, and they at once spun up, all but four. These wandered up and down for a week, having some want, and wasting away.

Five years ago, I discovered at Center, in the trunks of poplar trees (Populus tremuloides) several pupal cases of a Cossus, which, by their differing from the other cases known to me, of C. Robiniæ and C. querciperda, I had reason to believe was an undescribed species. This year, on the 14th of June, on examining some infested trees, several pupal cases were discovered projecting half-way from the trunks, and an imago, which had apparently just emerged, and was resting on the stump of a broken limb. The colors of the moth so exactly simulated the surface on which it rested that it was with difficulty observed, even when looking directly at it.

The object of this notice is to call the attention of American Entomologists to a most excellent and complete “Revision of the Family Sphingidæ,” by Arthur G. Butler, of the British Museum, which has appeared in the Transactions of the Zoological Society, London, in quarto form. A proper arranqement of the Sphingidæ of the world is a work requiring both extensive material and great experience and tact, of which Mr. Butler has shown himself to be equally possessed.