57 



Dr. Fitch states that the larva " excavates a burrow in the soft-sap-wood about 

 3 inches long and 0.20 in diameter, this burrow having the shape of a much bent bow or 

 a letter U. " 



It changes to a pupa in the same cell, the beetle apearing in July. (Packard.) 



In the latter part of June 1871 I found numerous specimens of this beetle on a red 

 oak that had been blown down on Montreal mountain. They were busily engaged trav- 

 elling backward and forward along the trunk in search of partners. I observed several pairs 

 mated. Copulaticn was of short duration and was frequently repeated, the female occasion- 

 ally dropping an egg in a crevice of the bark, no incision being made for its reception. They 

 appeared to keep altogether to the upper surface of the main trunk, none being seen on 

 the sides, under surface or even the larger branches. 



This species in some of its habits resembles the locust borer Cyllene robinics. (Harr.) 



That species however, drops its eggs in clusters of seven or eight together, according 

 to Dr. Harris, while A. fulminans, as observed my me, certainly only deposited a single 

 egg at a time. Dr Harris believed that G. robinice completed its transformations in one 

 year, and this I believe is the case with A. fulminans also. The tree that I observed 

 them on, had apparently not been attacked up to the time it had been blown down in 

 1871, as it appeared to be perfectly sound and healthy and was in full leaf. I examined 

 it several times in June and July 1872, but did not hnd a single beetle either on or about 

 it, but there were plenty of holes showing where they had escaped. 



In 1873 I found several specimens, also on a red oak ; this tree was standing, 

 but the top branches were dead and a few years finished it. Dr. Packard states that this 

 species has been found attacking the chestnut (Oastanea vesca) by Mr. R. B. Grover. 



3. The Noble Clytus, Calloides nobilis, (Harris). Order Coleoptera ; Family 

 Cerambycid^e : — 



This fine beetle measures almost an inch in length ; it is of a dark blackish brown 

 color, the wing-covers marked with two spots and three broken lines of yellow, I took 

 five specimens at the same time and place as A. fulminans, two on the tree and the re- 

 mainder close beside it, and although I did not find it ovipositing I am satisfied that it 

 attacks the oak. Dr. Packard states that it has boen found beneath the bark of the 

 chestnut at Providence by Mr, George Hunt, and as A. Julminans bores in both chestnut 

 and oak I think there is little doubt but that G. nobilis does the same. Moreover the 

 chestnuts are not found at Montreal so far as I am aware, so that the oak is probably its 

 only food plant in Eastern Canada. 



4. The Common Oak Borer, Eylotrechus colonus, (Fabr). Order Coleoptera; 

 Family Cerambycid^e : — 



Length half an inch, color dark reddish brown, two narrow undulated pale grey 

 bands at base of wing-covers. End of wing covers pale grey, enclosing two round dark 

 brown spots. Under surface dark brown with two round yellow spots. Abdominal seg- 

 ments margined with yellow. Legs and antennae reddish brown. Dr. Packard states 

 that he has found " the larva of this pretty beetle in abundance mining under the bark 

 of a fallen (probably white) oak near Providence, May 26th several pupae also occurred., 

 one transforming to the beetle May 27th. The mine extends up and down the trunk and 

 is of the usual form of Longicorn mines, being a broad, shallow, irregular, sinuous bur- 

 row, and extending part of the way around the trunk, the diameter near the end of the 

 burrow being 5 mm." 



I found several specimens of this beetle along with the preceding species, but all were 

 quietly resting beneath the trunk, (the tree was lying on a bank of earth torn up with 

 the roots and on the larger limbs, leaving the trunk clear of the ground). 



Dr. Packard states that Mr. George Hunt has found this species under the bark of 

 an old sugar maple, and it has been found running on dead hickory by Mr. W. H. Har- 

 rington. 



