In the months of June and July the Red Pine (Pinus resinosa) and the white Pine (Pinus strobus) show by the exuding pitch that they are suffering from the attacks of an insect. The wounds occur on the main stem below, the insertion of the branch. On cutting into the bark the injury is found to be caused by a small larva, which, when full grown, measures 16 to 18 millimetres. The head is shining chestnut brown with black mandibles. The body is livid or blackish green, naked, with series of black dots, each dot giving rise to a single, rather stout, bristle.

The greta interest in which this beetle has been held by Entomologists for so long has renderes an accurate account of its habits very desirable ; but for a very long period–over twenty years–it has singularly eluded more experienced observers. In the Proceedings of the Kansas Academy of Science for 1876, a slight account was published by Mr. H.A. Brous, but from the very small number taken by him, his article was necessarily imperfect.

I received, 25th June, from Mr. C. P. Whitney, New Milford, N. H.,a cluster of about 50 eggs of this species, laid on the under side of a leaf of Diplopappus umbellatus, date of deposition not stated. The larvæ hatched 28th June. The food plant not being obtainable by me, I gave them leaves of Chelone glabra, on which phaeton feeds, but so long as the least bit of the dry leaf of Diplopappus on which they hatched remained, the larvæ declined the Chelone, and then after starving many hours they attacked it vigorously. But, meantime, for want of proper food, several died.

I have, for three seasons, raised Euchaetes collaris from the larva, it being very abundant in this locality, and present the following notes as the result of my observations :

The larvæ feed on the Apocynum androsaemifolium, or Spreading Dogsbane. They will in confinement feed on Asclepias, but I have never, after careful search, found but one of the larvæ on it in the field. They feed at night, leaving their food-plant and hiding themselves during the day.

The suggestion of Mr. Hill (quoted on p. 89) that Homopteras “edusa and lunata are possibly sexes of one species,” has reminded me of my own doubts regarding not only edusa and lunata, but also Saundersii, and caused me to make a careful examination of my material.

My entire stock numbers 83 local specimens, arranged after authentic types in three series, consisting of 42 “lunata,” 24 “Saundersii,” and 17 “edusa.”.

The specimens separated as lunata show no white lines or areas on upper side of wings.