In the April number of the Canadian Entomologist I described a new Aphis affecting Pinus australis belonging to the Section Lachnini.

Having been studying the Aphididae of Florida for the past two years, a quantity of new material has accumulated on my hands, representing nearly all the known North American genera.

I obtained, June 16, 1880, from the trunk of a Populus candicans, at Buffa1o, N. Y., two larvæ which proved to be those of C. unijuga. They had passed their last moult when taken ; although they continued to feed in confinement for five or six days they increased in size but little during that time; their habits are strictiy nocturnal.

Trochilium Grande, n. p.—General appearance of T. Ceto (Melittia Cucurbitæ Harr.) but very much larger, expanding 1¾ inches.

Antennæ blackish. Palpi reddish orange. Head white in front, dark lustrous greenish gray on top. Collar red. Thorax above dark greenish same as top of head. Abdomen red, each segment outwardly edged with black.