>'* 



ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



Vol. IV. DECEMBER, 1893. No. 10. 



CONTENTS 



p. p. C— Dr. H. A. Hagen 313 Economic Entomology 323 



Cockerell— Note on Pseudococcus 317 ' Notes and News 329 



Skinner— Argynnis cybele and leto 318 j Entomological Literature 331 



Dyar— Larval cases of N. A. Psychidse 320 j Entomological Section 336 



Editorial 322 ' Holland — New Exotic Lepidoptera...;.. 337 



Dr. H. A. HAGEN. 



Dr. H. A. Hagen, Professor of Entomology in Harvard Uni- 

 versity and one of the foren^st entomologists of his time, died 

 in Cambridge, Mass., Nov. 9, 1893. 



Hermann August HAGENwas born in Koenigsberg, Prussia, 

 May 30, 18 17. His father, Karl Heinrich. Hagen, was a Royal 

 Councillor and Professor in the Albert University at Koenigsberg. 

 His mother's maiden name was Link. His early education was 

 received at the Gymnasium of Kneiphoven, and in 1836 he en- 

 tered the University of his native city as a student in medicine. 

 In the "Vita" appended to his Synonymia Libellularum Euro- 

 P^artim, he has told us of the above-mentioned facts of his 

 own life, and given us the names of his instructors in the Univer- 

 sity; the most noted of these was the zoologist, Martin Heinrich 

 Rathke, whom he accompanied in 1839 on a visit to Norway, 

 Sweden, Denmark and Germany, and whom he ever seems to 

 have highly esteemed. It was in this same year, 1839, that he 

 published his first entomological paper, his Verzeichniss der Li- 

 bellen Ostpreussens (List of the dragonflies of East Prussia). He 

 received his medical degree Oct. 17, 1840; and of the four theses 



