158 ENTOMOLOGICAL NEWS [May. '22 



Entomologischen Gesellschaft, took their leave of the deceased 

 in nobly held funeral orations. 



So much for the translation. I may add that Mocsary's 

 bibliography comprises 178 titles, mostly devoted to Hymen- 

 optera, especially Chrysidoidea. His contributions to science 

 cover approximately 2594 pages. H. L. VIERECK. 



Among those who have contributed to entomology, whose 

 deaths have not hitherto been noted in the NEWS, is Dr. ERNEST 

 ROUSSEAU, who died November 13, 1920. Two notices of his 

 life and work have appeared, both by M. J.-A. Lestage, one 

 in the Bulletin dc la Socictc Entomologique dc Bclglquc (tome 

 III, pp. 35-41, with a portrait), the later and longer in the 

 Annalcs dc Biologic Lacustrc (tome X. pp. 261-283). Both 

 are accompanied by the same list of his biological writings. 



He was born at Ixelles, Belgium, May 27, 1872, his father 

 professor of physics at the University of Brussels, his mother. 

 born Hannon, a botanist. "Eleve dans un milieu si hautement 

 scientifique." says his biographer, "Rousseau devait fatalement 

 venir a la science; en effet, il lui consacra toute sa vie." While 

 a medical student in Brussels, he joined the Entomological 

 Society there and published on Carabidae and Malacoderms of 

 Belgium. Eor some years his zoological activities were turned 

 to sponges and to insect histology, then again to the Carabidae, 

 when he contributed to Wytsman's (rcncra Insectorutn. In 

 1906 the Museum of Natural History at Brussels placed him 

 in charge of those limnological studies for which he is best 

 known. In pursuance of these he established a fresh-water 

 biological laboratory at the Lake of Overmeire and a new jour 

 nal, the Annalcs de Biologic Lacustrc. which has reached its 

 tenth volume. Of the 57 papers (some unpublished) listed in 

 his bibliography, 1 deals with Hydrachnids, 3 with insect his- 

 tology and anatomy, 6 with Odonate larvae, 14 with adult 

 Coleoptera, 2 with larvae of Coleoptera, 2 with Diptera, 1 with 

 aquatic Hymenoptera. At the time of his death he had two 

 works in preparation, one on La l'>i<<lo</ic dcs cau.r donees tor 

 the Encyclopedic Scientifique of Doin et fils, Paris, the other 

 Les Larvcs aquatiqucs dcs Inscctcs d'Europe, in collaboration 

 with J.-A. Lestage and H. Schouteden. The first volume of 



