1900] ENTOMOLOGICAL NEWS. 483 



A meeting of the American Entomological Society was held 

 Feb. 22d. Dr. P. P. Calvert, president, in the chair, ten per- 

 sons present. Dr. Calvert called attention to a publication, by 

 Kruger, on " Insect Wanderings Into Germany and America." 

 The preface was read and also extracts from the body of the 

 work. Dr. Skinner exhibited specimens of Argynnis nifofris 

 tcerulescers, recently described by Dr. Holland. This is a 

 variety of the female, the males being identical. Dr. Smith 

 made an examination of the gentalia of nitocris from Arizona, 

 and one of the specimens he had received from Dr. Holland, 

 which came from Mexico, and pronounced them different. Dr. 

 Skinner also stated that he had found considerable variation in 

 the same species of Nisoniades. Mr. Laurent said he had found 

 much variation in these characters in Pamphila peckius. Mr. 

 Reinick stated that he had found much variation in Lachno- 

 sterna, and many specimens could not be placed at all. Dr. 

 Calvert stated that organs that are much used are likely to 

 vary, and that in the Odonata these characters were not con- 

 sidered as valuable for specific separations as formerly. 



DR. HENRY SKINNER, Secretary. 



At the March meeting of the Feldman Collecting Social, held 

 at the residence of Mr. H. W. Wenzel, 1523 South Thirteenth 

 street, thirteen members were present. 



A letter from E. Lewis Reene, regarding collecting in Central 

 America, was read. 



Prof. J. B. Smith gave a resume of the genera and species in 

 the former and coming editions of the hiseets of New Jersey. In 

 the Hymenoptera the greatest increase was shown, 645 species 

 having been added to the number in the earlier list. 



The value of structural differences in the definition of genera 

 was discussed by Messrs. Smith and H. \Yenzel. 



Dr. H. Skinner stated that he is opposed to the wholesale 

 making of genera which had been carried on of late. He re- 

 ferred to the careless way in which genera have been described 

 and said a comparison with the fanua of the world should be 

 made before launching forth so-called new genera. 



Prof. Smith referred to the difficulties in the wav of system- 



