Mr. Schaus, in describing some new species of South American moths (Proc. Zool. Soc., Lond., 1894, p. 233), casualty refers the genus Apatelodes to the Eupterotidæ. As this genus has been placed among the Notodontidæ by American authors, it may be worth while to examine the arguments for this position.

The Eupterotidæ of Hampson are a series of mostly large moths from India, with geometriform markings, of a peculiar and rather characteristic appearance. The body is proportionately rather small and slender, and the fringes of the wings are long. Their hairy vestiture, broad wings and short cell suggest the Lasiocampidæ, where they are placed by Kirby. They are, however, frenate, and with the venation essentially of Notodontidæ, but without the accessory cell. Two genera, at least, are included (Gangarides and Cnethocampa), which differ considerably in habitus. In these, the body is stouter proportionately, the wings are narrower and the cell longer, while the general appearance suggests the Notodontidæ rather than the other Eupterotidæ. Mr. Hampson separates these families by the absence of the tongue in the Eupterotidæ; but, as this member seems to be equally lacking in the notodontian Melelopha (Ichthyura), the separation seems hardly very sharp.