Having newly arranged the Coccidæ of our collection, which have been named by Prof. J.H. Comstock, I compared them with the professor's Catalogue for 1883, and ascertained the presence of two-thrids of the 168 numbers enumerated. I find that only 27 N. Amer. species are wanting. Among the insects received in the collection of the Peabody Academy is Lecanium tiliœ, A. Fitch, from Mt. Carroll, Ill., by Mr. Shimer, very probably identical with A. Fitch's species, and Lecanium tulipiferœ, Cook, by typical specimens.