80 THP: CANADIAN ENTOMOLOGIST. 



Recent Advances in Economic Entomology, by C. V. Riley; 8vo., 



pp. 3- 



A commmiication made to the Philosophical Society of Washington 

 in reference to insecticides. 



U. S. Department of Agriculture, Division of Entomology ; Bulletin 

 No. 4, 8vo., pp. I02. 



This useful publication contains a report on Cranberry and Hop 

 Insects, by John B. Smith ; observations on the Rocky Mountain Locust, 

 by Lawrence Bruner ; on Insects Injurious to Cotton, Orange and Sugar 

 Cane in Brazil, by John C. Branner ; Effects of Cold upon the Scale 

 Insects of the Orange in Florida, and extracts from correspondence con- 

 taining many interesting facts relating to injurious insects. 



CORRESPONDENCE. 



Dear Sir : In a recent issue, among some entomological notes, Mr. 

 J. G. Jack mentions having taken V. antiopa and other butterflies on 

 choke cherry bushes that were infested with Aphides. Perhaps some 

 observations of mine bearing on the same point might be of interest. 



During Sept., 1883, I noticed that a small apple tree in our orchard 

 that was in a circuit of about twenty sugaring trees, had become unpro- 

 ductive, only an occasional moth appearing, while neighboring trees would 

 be well covered. Happening to look up into the tree one night, I dis- 

 covered that it was swarming with moths, and a careful examination 

 showed that the tree was literally covered with the apple plant-louse, A. 

 inali. The moths proved to be principally L. unipunda and Arthosia 

 bi color aga, but there were some Agrotis c-nigrutn and a few Hadenas. As 

 I had never noticed this habit of the' moths before, I kept on the watch 

 for it afterwards, and found that the two former species could always be 

 found where A. viali occurred in any numbers. During the autumn I 

 took several species of the Noctuidse, and at least one butterfly (P. cardui) 

 on this infested tree. I have always taken O. bicolorago axid f err ugino ides 

 largely on apple trees, and I now have little doubt but the plant lice are 

 the principal attraction that draws them to these trees. I have also seen 

 snow-ball bushes ( Virburnum opuhis) which were covered with Aphides, 

 well patronized by the Noctuidse, especially Mamestra renigera, L. pal- 

 lens^ L. coinmoides and L. imipuncta. 



E. P. Van Duzee, Lancaster, N. Y. 



