65 



Fig. 15. 

 meetings. It is 

 Paris green and 



Fig. 16. 



made during the previous year, and killed the twig. The beetles appeared in June. 

 The other was a small Scolytid, probably Hypothenemus, which made short galleries in 

 the extreme tip of the twigs infested by the Longicorn larva. It is probable that this 

 attack is secondary, and not made while the wood was sound. 



Some discussion was had at our last meeting concerning the points of the tree 

 attacked by the larva of Saperda Candida. (Fig. 15.) This led me 

 to observe carefully during the present season, and I find that while in 

 quince the attack is almost exclusively at the base of the tree, in apple 

 and pear, any part of the trunk and even the larger branches may be 

 attacked. The larvie are more numerous at the base, as a rule, but 

 the other localities are not by any means exceptional. I know that no 

 other larvaj were concerned, because I cut out pupaj and imagos as 

 well, and am certain of my facts. 



Peach borers, the larva? of Sannina exitiosa (Fig. 16), are now 



largely treated by mechanical 

 coatings to the trunk. The 

 favourite means is the onerecom- 

 I mended by me in the bulletins 

 of the station and at farmers' 

 simply a thick whitewash with 

 glue added. I have never discouraged the use of 

 other mechanical coatings, but have taken great 

 pains to explain that no remedial results must be 

 expected ; that the measure was protective merely. The use of paint, as suggested by 

 Mr, Alwood, does not find favour, owing to a fear that injury may result to the tree. 



Blackberry insects have been particularly observed ; but as I have already described 

 these, a mere mention here is all that is needed. 



The Eose-chafer, Macrodactylus suhspinosus, has been less destructive than usual. 

 My studies on this insect have appeared in bulletin form, and I need only emphasize here 

 that all my tests of remedial measures were made in the field under ordinary field con- 

 ditions, and that the results are such as would likely be obtained by a farmer employing 

 them. 



The Grape Flea-beetle made its appearance very early in the year, before even the 

 leaves had made their appearance, and began eating the buds. I recommended collecting 

 in kerosene pans early in the day, and this proved effective. About a pint of the beetles 

 were sent me in grateful acknowledgment. 



Root maggots have been very abundant, and onions have been most severely at- 

 tacked. In some places the young sets have been completely destroyed. This pest is 

 now pretty well distributed in the trucking districts around Philadelphia. 



Aphides on orchard fruits, and particularly on apple, became very abundant during 

 a three weeks drought near New Brunswick, and blackened tips everywhere caused 

 serious alarm. A cold storm, lasting two days, broke the drought, and apparently 

 checked the multiplication of the species. There was no further increase of injury, at 

 any rate, and no other complaints reached me. 



The melon vines have suffered greatly from attacks of Aphides, but still more from 

 a bacterial disease. The damage done by the latter is quite usually attributed to the 

 Aphides, 



I have made some study of squash insects, more particularly of the "Borer" 

 Mellittia ceto, of which I have previously spoken. The Stripped Beetle, Diahrotica 

 vittata, does not bother our large growers very much. When they seem abundant, 

 they use lime or piaster on a day when there is a gentle wind, sowing it on broadcast. 

 The beetles fly before it and are driven off the field. The rext man takes up the work 

 on his field, and so the beetles are driven olF until they reach some unguarded field which 

 is then usually injured quite seriously, Epilachna borealis has been very abundant, and 



5 (en.) 



