March, 1913.] PROCEEDINGS OF THE SOCIETY. 83 



Among others the following species of moths were exhibited at the meet- 

 ing : Xylina petulca, signosa, bethuiiei, fagina, georgi, baileyi, thaxteri. pexata, 

 ferrealis, Anytus capax, privatus, Xanthia flavago, Cosmia baleacea, Dryobota 

 illocata, Euxoa veUerv^ennis, Scopelosoma tristigmata, Nepytia semiclusaria, 

 pellucidaria. Of the two last named species it was pointed out that pelluci- 

 daria, originally described by Packard in 1873, but provisionally regarded as a 

 variety of semiclusaria in the monograph on this family by the same author, 

 was entitled to specific rank. While both species were found in the same 

 locality, their differences become obvious, even without critical examination 

 upon comparison of the series of about thirty specimens of both sexes taken 

 by the speaker. Pellucidaria is a larger insect, wing expanse 1% in-i color 

 deep dusky, head white; semiclusaria ranges smaller, wing expanse i V4 in., 

 color pale ashy, head yellow. 



Aside from Lepidoptera collecting in other orders gave poor results. At 

 North Conway alder thickets had become completely defoliated by the work 

 of Haltica bimarginata, but otherwise no beetles were encountered in large 

 numbers. ~ 



Mr. Pollard said that the record of Samia Columbia feeding on bayberry 

 was of great interest. 



Mr. Engelhardt said that its usual food plant was larch, but that there was 

 no larch on Orr's Island. 



Mr. Leng exhibited three new varieties of Cicindela with their related 

 forms, and spoke of their distinguishing characters, pointing out also the 

 interesting fact that their discovery resulted from the distant journeys made 

 by Dr. Osburn, Mr. Engelhardt and Messrs. Davis and Grossbeck during 19 12. 

 The descriptions will appear later in the Journal. 



Mr. Bird exhibited Scolytus quadrispinosus, its larva, pupa, and work in 

 hickory, resulting after emergence in what he termed " shothole effect." He 

 said that two years were required to kill the tree, during which period the 

 larvae, working around the trunk, destroyed the bast fibers, producing no exter- 

 nal sign until the beetles emerged after pupation. The emergence takes place 

 from the end of June to the middle of July, after which the beetles do not 

 immediately mate, but devote themselves to chewing the base of the leaf 

 petioles, making borings in which the mating takes place about the middle of 

 August. The female then lays eggs in little cells, which are discoverable, being 

 confined to the trunk and larger branches, none in branches less than i ^ in. 

 in diameter. The larvae hatch about the end of August and may be destroyed 

 by squirting gasoline into the holes leading to the egg cells. Mr. Bird added 

 that the usual professional advice to fell infested trees was idle, as the damage 

 was done by the time the shotholes were evident and the beetles were gone 

 to some other tree, usually one of weakened vitality. 



Mr. deVyver spoke of the beneficial results obtained in the Bronx by spray- 

 ing the trees at the egg-laying period with Barkurol or crude carbolic acid, 

 and added that in company with Dr. Felt he had found the beetles attacked 

 by parasites. 



