Euceros Canadensis, n. sp.—Female. Shining : head yellow ; two spots behind antennæ, confluent with a mark on vertex, covering ocelli and occiput, and tips of mandibles, black; antennæ black, palish at base beneath; thorax black, lateral margin of mesothorax in front of tegulæ, two lines on disk, a spot on each side before scutellum, a broad V-shaped mark on scutellum, apex of metathorax, which has two black spots above, anterior margin of prothorax, a spot on each side of pleura, and the tegulæ, yellow; wings hyaline, dusky on apical malgin; legs yellow, anterior coxæ in front, posterioi coxæ,their femora, except base and apex,and their tibiæ, except base, black, their tarsi, except tips, fuscous; abdomen yellow; a triangular mark on each side of first segment, a transverse mark on each side of second and third segments, dilated laterally, and the remaining segments, except medial spot at tip of fourth segment, and another on extreme tip of abdomen, blackish; venter entirely yel1ow.—Length, 5¼ lines.

Pepilio Asterias, Fab.—A specimen of this butterfly was seen by me at Natashquaun on the 24th June. On the 4th July I found it common at a place further down the coast, called Musquaro. The same species occurs in Newfoundland.

Pieris Frigida, Scudder.—This butterfly is common at Natashquaun, where it appears about the 15th June. I am of opinion that it is doublebrooded, as I noticed fresh specimens on my return to Mingan on the 16th July. It occurs on the whole of the south as well as the eastern coast of Labrador, where Mr. Scudder procured the species.

The genus Theridionconstruct beautiful silken nests for the protection of their eggs. I have collected what I take to be the nests of three species in Canada. They are generally found under the bank of decayed forest trees. Another which I found on an old fence at Quebec, although not constructed of silk, its form, in my opinion, is sufficient to class it among the architecture of Theridion. One of these nests resembles that of Theridion variegatum, Walck., of Europe.

Several years ago my esteemed friend, Mr. D. W. Beadle, of St. Catharines, sent me specimens of this larva, which he had taken feeding on some species of Gnaphalium. No description was then taken, and the larva was not met with again until the present season, when I found it on the G.W.R.R. track,a mile east of London, feeding on Gnaphalium polycephalum.

I notice in the Entomologist, No. 4, some remarks on Melitæa phaeton. I think there is something exceptional in the habits of this species, and I hope the observations of your correspondents may give us light.

On 1st May, 1868, one of my young friends in this neighbourhood brought me eleven chrysalids of phaeton, part of which he had found suspended to fence rails, He reported the caterpillars as crawling along the rails, and that he had tried to bring me some of them, but before he could reach me (living four miles distant), all that he had taken had changed to chrysalids. I directed him to search for the food plant.

On September 10, 1868, during one of our regular Monday morning excursions, I captured on a beech tree, a short distance from London, a larva which I judged to belong to the Smerinthian. genus. Its chief peculiarity, to which I wish to call attention, was its power of emitting a singing noise when handled or disturbed. The noise was similar to that produced by that pretty little beetle so common in our gardens, Lema trilineata. This is the only instance of a musical larva that I have met with, nor do I remember to have ever seen any mention in entomological books of a similar case. I should be glad to know, Mr. Editor, if you, or any of your correspondents, have ever noticed this musical power in any larva? or if you can explain the manner in which the noise is produced.