In No. 7 of Entomologica Americana, Mr. G. W. J. Angell gives some interesting notes on this insect. Having examined a large number from various localities “showing a nearly complete gradual gradation from the finely maculate form of Philadelphica, to the strongly marked scalaris type,” Mr. Angell is of opinion that Philadelphica Lin., multipuncta Say and its supposed varieties, are all varieties of scalaris Lec. I incline myself to the belief tirat scalaris and philadelphica are distinct species, and as my experience of these forms appears to be different to that of some other col lectors, I give it in the hope that it may lead to a careful study of their life habits. I find that Dr. Harris' history and figure of scalaris fit it exactly as it occurs in the neighborhood of Montreal. For years past I have found it on elm and linden, and on no other plant or tree. Philadelphica and Bigsbyana I find on willow and alder; never on elm and linden. Dr. Packard in his Guide states that scalaris is abundant on the alder.