90 



Forbes scale in check. The Forbes scale would sometimes become 

 quite injurious and peach trees would often be killed. It was his 

 observation that the C. hhvdnenia was largely instrumental in con- 

 trolling this species, and while he had observed the wheel bug to be 

 very common, yet he had never noticed that it fed on the larva of 

 this beetle. 



]\Ir. Felt stated that he desired to congratulate Mr. Marlatt on his 

 efforts in searching for the native home of the San Jose scale and pro- 

 curing its natural enemies. He stated that there were no wheel bugs 

 in New York State, so that this insect could not have a hand in destroy- 

 ing parasites. He stated that there were very few of the C. hivulne- . 

 rus. So far as his observations went, he considered the ladybirds 

 most valuable as enemies of plant-lice. Plant-lice were very abundant 

 in Albany in 1897, and ladybird lai-vae were so very numerous as to 

 attract considerable attention. 



Mr. Hopkins remarked that there was great difficulty in determin- 

 ing the different species of closely related scolytid beetles, and sug- 

 gested the importance of a close study of closely related species in all 

 stages to definitely determine their distinctness. As an example, two 

 scolytids had been described from Germany as different species, but 

 were afterwards considered the same. After a close study, however, 

 he had found that the two European species belonged to two quite 

 distinct genera. On close study he had found striking differences, not 

 onh' in habits, but in structure. 



The next paper was presented by Mr. Quaintance. 



ON THE FEEDING HABITS OF ADULTS OF THE PERIODICAL 



CICADA. 



( Cicada septendedm L. ) . 



By A. L. QuAixTAxcE, CoUege Park, Md. 



But little accurate observation seems to have been made on the 

 feeding habits of the adults of the periodical cicada, or so-called 

 seventeen-year locusts. A review of the rather scant litei-ature on 

 the subject indicates also that considerable diversity of opinion pre- 

 vails among entomologists and others as to the extent to which they 

 feed, and, on the whole, the opinion probably prevails at the present 

 time that the adults, particularlj' the males, feed but little, if at all, 

 during their brief aerial life of about thirty days. The first note in 

 reference to this point which I have seen is by Messrs. Walsh and 

 Riley, in the American Entomologist, Vol. I, p. 67 (1868). It is here 

 stated, under a general discussion relative to the sting of the period- 

 ical cicada, that "the beak is an organ which both sexes of the 

 ciiada possess, and by which thej' take their nourishment. We have 



