99 



found to have been injured 20 per cent. Corn on hij;h or low land 

 seemed to be atfected in about the same [)ropoi'tion. On Mr. Lewis's 

 l)laee, one ftehl was found in which over 50 per cent of the stalks were 

 damaged, and upon the farm of a Mr. Taylor nearly every stalk in one 

 tield contained borers, and his yield was estimated to have been re- 

 duced to from to 8 barrels per acre to 2 barrels. 



Most of the larvae were found below the second joint. In one stalk, 

 from which Mr, Cordley took V2 larvie, they were arranged as follows: 

 Seven beh)w first Joint, 1 between hrst and second, .'5 between second 

 and third, and 1 between third and fourth. In auotlicr stalk from which 

 8 larvie were taken, 1 was found 

 jn the tap root, 5 between first 

 aud second joints, 1 between fifth 

 and sixth joints, and 1 between 

 eighth and ninth joints. 



Dr. J. S. Massey, of Comorn, 

 King George County, Ya., an in- 

 telligent gentleman Avho has paid 

 considerable attention to this in- 

 sect the present season, informed 

 Mr, Cordley that in his opinion 

 the territory embraced l)etween 

 the Rappahannock and Potonuic 

 rivers and extending from Fred- 

 ericksburg to the Chesapeake 

 Bay was pretty well infested by 

 the borer, which first made its 

 appearance in this section dur 

 ing the season of 1890 on the 

 farm of Senator Newton, of Co- 

 morn. Subsequent to Mr, Cord 

 ley's visit I made some effort to 

 ascertain by correspondence and 

 otherwise whether the insect 

 occurred in a more accessible lo 



Cality than Chatterton Landing, open to show pupa and larval burrow (original). 



but was uuable to hear of it in the vicinity of Colonial Beach, a sum- 

 mer resort some 20 miles farther down the river, to which Washington 

 steamers run daily. 



August 8, however, 1 visited this latter locahty, ami although in- 

 dividuals about the resort were unable to give me any information, I was 

 fortunate in finding the borer in the first cornfield which I visited. 

 Large well-grown stalks of corn were infested only to a slight extent 

 and then evidently onl^' by large larva? which had migrated from 

 smaller stalks which had been killed some time previously. On the farm 

 of Mr. J. S. Newton, of IMaple Grove, Westmoreland County, some 6 

 9670—^0. 3 2 



Fio. 3.— Work of larger corn stalk-borer: a. general ap- 

 pearance of stalk infesteil by first brood; b, same cut 



