OF WASHINGTON. 411 



tion. Mr. Schwarz mentioned Dr. Hagen's paper which brought 

 together the instances of copulation between different species of 

 insects, and in which it is shown that closely allied species rarely 

 copulate, while there are many instances of species belonging to 

 different families having been seen in sexual union ; he further 

 said that he had once seen two species of Lachnosterna of differ 

 ent groups apparently in the act of copulation, but on examina 

 tion found they were both males ! 



DECEMBER 14, 1899. 



The 1 47th regular meeting was held at the residence of Mr. 

 W. H. Ashmead, 1821 (^street N. W. President Gill in the 

 chair, and Messrs. Ashmead, Heidemann, Marlatt, Busck, 

 Caudell, Matthis, Dyar, Howard, Johnson, and Currie, active 

 members, and Woods, Barber, Ulke, Kotinsky, and Bayley, 

 visitors, also present. 



The officers for 1899 were re-elected for the year 1900. 



Under the head of Exhibition of Specimens and Short Notes, 

 Mr. Ashmead showed a new genus of Braconidae belonging to 

 the Helconine group, from the Chatham Islands, which he pro 

 poses to call Schauinslandia. 



In response to a question, Dr. Gill said that the fauna of the 

 Chatham Islands is all Australasian but of somewhat colder 

 character than that of New Zealand. Most of the genera are 

 New Zealand genera, but the species are usually different. 



Mr. Heidemann read a note from Dr. Christopher Auri- 

 vilius, of Stockholm, stating that specimens which Mr. Heide 

 mann had considered to be identical with Stal's Aradus niger 

 in a paper recently read before the Society, had been compared 

 with vStal's type and the identity established. 



Mr. Henry Ulke was invited by the Chair to make some re 

 marks and stated that for two years he had done nothing in ento 

 mology. He had recently attended a meeting of the Philadelphia 

 Entomological Society and mentioned the fact that he was the first 

 member elected to that Society forty years ago the present month. 

 He spoke of some of his experiences in collecting in the District 

 of Columbia some insects formerly considered exceedingly rare, 



