94 ENTOMOLOGICAL NEWS [xxxii, '21 



the life history of Lycaena alcon and L. euphctnus. M. Oberthiir treats 

 of the variation of certain palaearctic species of Lepidoptera. Antho- 

 charis bcllczia Bd. and cramcri Butler : bclia Cramer, by Gedeon 

 Foulquier. A notice of the Andrae Avinoff collection, by C. Oberthitr 

 and A. Avinoff. Revision of the Aegeriidae of Barbary, by Le Cerf. 

 -H. S. 



THE HESPERIOIDEA OF AMERICA NORTH OF MEXICO. By ARTHUR 

 WARD LINPSEY. University of Iowa Studies, Vol. IX, No. 2. Received 

 January llth, 1921. One hundred and ten pages, bibliography and two 

 plates. The author makes a superfamily of these butterflies, divided 

 into two families, Hesperiidae and Megathymidae, the former with 

 three subfamilies, Pyrrhopyginae, Hesperiinae and Pamphilinae, and 

 the latter further divided into four groups. A new genus of 

 Pyrrhopyginae is proposed, with Erycidcs ara.vcs Hew. as the type. 

 Descriptions and tables for the separation of the families are given, 

 and tables for the separation of the species. The synonymy and dis- 

 tribution are recorded. Useful cuts showing the neuration. antennae 

 and palpi are given for most of the genera. This is a valuable addition 

 to the literature of the subject and will be very useful to the students 

 of this very interesting group of butterflies. H. S. 



Doings of Societies. 



The Entomological Section of The Academy of Natural Sciences of 



Philadelphia. 



Meeting of March 25, 1920, Dr. Henry Skinner presiding. R. T. 

 Weber, of Melrose Highlands, Mass., visitor. 



Mr. Rehn spoke about the tendencies of some authors to make single 

 types for their species, but do not carry out the same in the proper 

 spirit. He emphasized the importance of a proper understanding of 

 the terms type, cotype, and paratype, and that we all should insist on 

 the correct use of these terms. 



ORTHOPTERA. Mr. Rehn exhibited specimens of the four species of 

 the Tettigoniid genus Rchnia, also discussed their relationship to one 

 another and to the genus Neobarrcttia, which was also on exhibition. 

 The distribution of the species was graphically illustrated. Remarks 

 were made by Messrs. Hebard and Hornig. 



DIPTERA. Mr. Hornig exhibited living larvae of Aedcs currici three 

 days old. He spoke about the habits of this species and the methods of 

 control. His experience revealed that oil spraying has little or no 

 effect on their eggs. Acdes canadcnsis is now about six days old. 

 Mr. Weber gave an interesting account of his work with Dr. Aldrich, 

 of the National Museum, on the dipterous genera Hxorista and Phoro- 

 cera. He also spoke about his work in the study of the parasites of 

 the gipsy moth, and other lepidopterous larvae, as well as about the 



