Dec., '07] ENTOMOLOGICAL NEWS. 443 



Genus NEZARA Amyot and Serville. 

 N. hilaris Say. Raleigh, May to October. Not common. 



Genus BANASA Stal. 

 B. dimidiata Say. Raleigh. Taken by Dr. E. B. Wilson, May 29, 1906. 



Genus STIRETRDS Laporte de Castelnau. 

 S. anchorago Fabr. Raleigh, May 24, June and July 2, 1902. 



Genus MINEUS Stal. 

 J/. strigipes H. S. Raleigh, May 2, 1906, and May 3, 1904. 



Genus PODISUS Herrich-Schaeffer. 



P. maculiventris Say. Raleigh. In April, and August to October. 

 Not uncommon. 



Genus EUTHYRH?NCHUS Dallas. 



E. flo ridanus Linne". Southern Pines, Manee collector ; and Southern 

 Wake Co , July 3, 1906, by F. Sherman. 



An absolutely sure method of preservation of natural 

 scientific collections against insect enemies. 



BY GEO. W. BOCK. M. D. 



Years ago, when I commenced to collect Coleoptera, I fre- 

 quently found my treasures destroyed by larvae of Anthrcnus, 

 Dermestes, Trogoderma and other insect enemies, and I asked 

 my friend, the late Hugo Soltau, an as enthusiastic entomologist 

 as ever lived, for a good and reliable preservative. He advised 

 me to read an article written by John L/econte, published in 

 the American Naturalist, Vol. iii, A. D. 1870. In consequence 

 I tried all chemicals mentioned, painted the boxes inside, 

 sprayed the beetles, etc. , but without the promised results. 

 Some of the procedures were connected with so many disad- 

 vantages as to make them impracticable, others again too elabo- 

 rate to be of practical use. Soltau himself used so-called 

 moth-balls, containing mostly napthaline, but I found them 

 absolutely without any value. I even once saw an Anthrcnus 

 larva crawling lustily on top of one of these cones. Subse- 

 quently I experimented with other drugs and found that the 

 following methods of disinfecting infected material and treat- 

 ment of the collection boxes will keep the collection absolutely 

 free of any insect pest. 



