Vol. XXVlii] ENTOMOLOGICAL NEWS. 47 



thousands of the larvae on hackberry during October and later in the 

 season under foliage at the bases of the trees. He exhibited hundreds 

 of second stage larvae which he had collected at Arlington. Mr. 

 Weiss showed two species of Geometridae which had been captured 

 by the sticky nectar of the mosquito plant, I'incctoxicum japonicum. 

 and also dried specimens of the plant. 



Hymenoptera. Mr. Weiss spoke of finding the European saw 

 fly, Diprion simile Hartig, in New Jersey this past summer, and of its 

 injury to pines and exhibited a male and a female. 



Coleoptera. Mr. Weiss exhibited two orchid weevils new to 

 Xew Jersey, these being Acypotheiis orchirora Blackb., and Diorymcl- 

 lus laevimargo Champ., both being injurious to greenhouse orchids, 

 the latter species only recently having been described by Champion. 

 HARRY B. WEISS, Secretary. 



Entomological Section, The Academy of Natural Sciences, 



Philadelphia. 



Meeting of November 23, 1916. Nine persons present. Mr. R. C. 

 Williams, Jr., Vice-Director, presiding. 



Mr. McAtee, of Washington, D. C., spoke of his interest in work- 

 ing up the local fauna of that vicinty. 



Diptera. Mr. Hornig reported the finding of fresh pupae of the 

 house fly on the 20th of this month which he considered noteworthy in 

 view of the prevailing cold weather. 



Lepidoptera. Mr. Ilg exhibited some specimens of the lo moth 

 which he said are emerging now in his room. He said that birch was 

 the food plant of these moths. Dr. Calvert called attention to a com- 

 munication by Dr. Carpenter in the Proceedings of the Entomological 

 Society of London (for 1915, pages Ixix-lxxii) relative to his obser- 

 vations in South Africa of birds eating butterflies. The birds seem- 

 ingly preferred the Lycaenidae to the Pierinae. Mr. McAtee spoke of 

 his investigation of birds as agents in the destruction of insects. He 

 stated that, although there seems to be conclusive proof that birds 

 eat butterflies, the quantity consumed evidently cannot materially affect 

 their survival. He further stated that according to his observations 

 a species is never exterminated by its natural enemy. 



Orthoptera. Mr. Rehn made a few interesting remarks on the 

 auditory foramina found on the cephalic tibiae of Tettigoniidae and 

 Gryllidae, with particular reference to the external development of 

 the same found in certain genera of the Gryllotalpinae. The features 

 separating Gryllotalpa and a new genus related to the same were dis- 

 cussed and material illustrative of this exhibited. Mr. Rehn said in 

 answer to a question that the function of the so-called auditory organs 

 has not been definitely determined. A lengthy discussion followed as 



