126 ENTOMOLOGICAL NEWS. [May, 



knowledge of the Hymenoptera of Brazil, No. 4. Thynninae and additions, 

 1. — H oward, L.O. A new egg-parasite of the periodical cicada,* 4. — 

 Janet, C. On the morphological limits of the rings of the integument and 

 on the articular membranes in Hymenoptera at the imago period, 12, Jan. 

 31. — Ken yon , F. C. The daily and seasonal activity of a hive of bees, 

 fig., American Naturalist, Boston, Feb., '98. — Konow, F. W. Systematic 

 and critical revision of the Siricid tribe Siricini, 38, 3, Mar. 31. — Kriech- 

 baumer. Dr. The genus Joppa (concl.), 41, 2. — March al, P. An 

 example of dissociation of the egg : the cycle of Encyrtus fuscicollis, 

 Comptes Rendus, Soctete' de Biologie, Paris, Feb. 26, '98 ; The dissocia- 

 tion of the egg into a great number of distinct individuals and the evolu- 

 tion cycle in Encyrtes fuscicol/is, 153, Feb. 28. — Perez, J. On a new 

 form of buccal apparatus of Hymenoptera, 71. — Q u a i n t a n c e , A. L. 

 See Economic Entomology. — R e b e r , D. The enemies of the honey- 

 bee in the animal and plant worlds, Bericht, St. Gallischen Naturwissens- 

 chaftlichen Gesellschaft '95~'96. 1897. — R obertson, C. Cockerell on 

 Panurgus and Calliopsis, 4. — T o s i , A. Biological notes on Apiariae, 69. 



Doings of Societies. 



A meeting of the Entomological Section of the Academy of 

 Natural Sciences of Philadelphia was held March 24th, Mr. C. 

 S. Welles, Director, presiding. Twelve members were present 

 and Dr. John B. Smith, of New Brunswick, N. J., visitor. Dr. 

 Calvert stated that a student at the University of Pennsylvania 

 had been interested in chestnut growing, and was under the im- 

 pression that isolated trees were less likely to be troubled by 

 Balaninus larvae. Dr. Calvert said he would take advantage of 

 the presence of Dr. Smith to ask his opinion on the subject. 

 The latter said a single tree standing alone would be likely to 

 escape, but it would be of no advantage to plant a grove with 

 the trees wide apart. The speaker further said the best way to 

 prevent Balaninus injury is to gather the chestnuts as soon as 

 they fall to the ground and send them to market, or else put them 

 in a tight receptacle and kill all larvae that come from the nuts. 

 Mr. Wenzel said his experience had taught him that isolated 

 trees always produce an abundance of all kinds of insects. Dr. 

 Calvert also asked if Adalia bipunctata ever injured vegetation. 

 Dr. Smith replied that he did not believe the species in question 

 ever injured plants. Mr. Johnson exhibited specimens of Tabanus 

 abdominalis and exnl. The principal character distinguishing 

 the species is that the posterior cell is covered in abdominalis and 

 open in exul. In two specimens the posterior cell was open in 

 one wing and closed on the other, thus showing apparent running 

 together of the species. Prof. Smith said variation was always 

 to be expected in venation. Dr. Calvert said differences in vena- 



