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which he had been resting. Tliis he repeated several times nntil 

 captured, although no reason could be discovered for his attraction to 

 the spot except a small wound in the bark from which a drop of I'esin 

 exuded. These males I then supposed to be those of U. Jlavicornis , 

 but further examination seems to prove them albicorms. In 1882, 

 U. cyaneus was abundant in September and the beginning of Octo- 

 ber, during which period I captured ten females and five males. These 

 ■were all taken about the city, and I was then of tlie opinion that they 

 came from the maples, which are by far the commonest shade trees 

 along our street. As the insects have since been rare it seems prob- 

 able that they also came from the telegraph poles. Perhaps the large 

 number of new poles that are at present being put up may furnish us 

 with some interesting insects during the approaching season. 



Tremex columba, Fahr. — This is by far the commonest of our 

 Uroceridaj, and is also the largest. It attacks princi[)ally maple and 

 beech which have been wounded, or which from old age have com- 

 menced to decay, but it also occasionally lives in other trees. It may 

 be found in the autumn emerging from, or ovipositing in, the trees just 

 mentioned, and the bodies of those which have perished in the latter 

 act are frequently seen fastened to the trunks. The males are very 

 rare. 



Xiphydria albicorms, Harris. — In the summer of 1 883 this species 

 was very i)lentiful in the city and neighbouring woods, infesting young 

 or medium sized maples, to which they are apparently very injurious, 

 as they riddle the wood with holes similar to those of tremex, except 

 that they are smaller. During the past season this insect was I'are 

 and only a few specimens were observed. X. attenuata is a very rare 

 insect, of which only two males have yet been captured. 



