52 



The Bean Epilachna is in full force on the college farm. All stages, from eggs to 

 adults, found last of July. Some experiments in s[)raying with Paris green were tried. 

 The results up to August 1st were negative, neither the insects nor the plants being 

 killed. The solutions were purposely made very weak. 



The latter part of July, 1891, the Bollworm i^Heliothis armigera) was found in nearly 

 every ear of corn in a patch on the college farm. They were of all sizes and colours, 

 and were accompanied almost invariably by large numbers of Coleopterous (Elaterid 1) 

 larvse, which seemed to work entirely independently of the worms, and bored all through 

 the ripening kernels, doing much destruction. 



A leaf-miner was found on the vine during June, 1891, but was not bred. It mines 

 the substance from between the two skins of the leaf, and its gallery may be seen plainly, 

 with its small grub at the terminus of it. 



On the 15th of June, 1891, I found a rather large number of adults of a Rose Chafer 

 {Macrodactylus sp.) on the leaves of the vine in the vineyard about a mile from this place. 

 They had eaten the leaves very badly and were nearly all in coitu, but were found on 

 only two or three vines. They soon afterward all disappeared. 



A leaf miner on the cottonwoods here [Po pubis fremontii) annually destroys the 

 whole tirst crop of leaves on nearly every tree in the valley. April 30th, 1891, nearly 

 every cottonwood presented a thoroughly blistered appearance, caused by the inside of 

 almost every leaf on the tree having been entirely eaten out, leaving the blistered-like 

 skins of the leaves alone on the trees. This appearance continued for a couple of weeks 

 until the trees gradually put forth a whole new crop of leaves. The second crop of leaves 

 was but little infested this year, though I am told that in some years they also are nearly 

 destroyed. I was unable to breed this miner. 



The vine-leaf hopper has been studied. Eggs deposited singly, last of April, beneath 

 skin of leaf, marked by a minute globule of exuded sap. Hatched last of May or first of 

 June. Kerosene emulsion on the young hoppers, diluted fifteen times, proved effective ; 

 I. X. L. compound only partially so. 



Owing to a misunderstanding of one of the names in this paper a slight discussion on 

 the habits of Ahochara followed. 



Mr. Schwarz considered the larvse of these beetles not to be true parasites, but 

 simply predatory. 



Mr. Fletcher had bred larvte of this genus from puparia of the cabbage maggot, in 

 which no holes of egress or ingress could be discovered, and considered them to be true 

 parasites. 



Mr. Schwarz said that Mr. Coquillett had noticed the larvae of Ahochara enter the 

 puparia of Anthomyia, and stated, moreover, that the beetle larva has no approach to the 

 parasitic habitus. 



Mr. Southwick mentioned the occurrence of mites upon Scarites subterraneus. 



Mr. Webster mentioned the abundance of Urupoda americana at Columbus, on 

 Diahrotica and a large number of other insects. 



Mr. Alwood and Mr. Atkinson spoke of the abundance of beetle mites in their 

 localities. 



NOTES ON BLACKBERRY BORERS AND GALL MAKERS. 



BY JOHN B. SMITH, NEW BRUNSWICK, N. J. 



Blackberries are raised in New Jersey on a very large scale, and near Hammonton, 

 in Atlantic County, several hundreds of acres are devoted to this fruit. After many 

 trials the '' Early Wilson " was selected by growers as the most satisfactory variety for 

 siz^\ flavour, date, and shipping qualities, and it forms the bulk of the crop. A few other 



