"Abdomen above and ber.eath of nine segments, the first 

 distinctly visible above, beneath visible onlv a! the -ide- ; >e 

 broader, beneath nearly entirely concealed. The remain! 

 are distinctly visible both above and beneath, tin- 

 slightly prominent, giving the sides of the abdonu 

 ance." (Horn 1872). 



"Imago. Robust, color piccous to brown, elvtra often paler, -nrfat 

 moderately pubescent. Head and thorax very convex, the moirh inf> 

 rior, mandibles broad and chisel-shaped at tip ; surface < 

 thorax densely and coarsely punctate; stria? of elytra de 

 interspaces nearly ilat, rugose, and punctulate, antenn:e and 



"Length 7-9 mm." (Forbes. 1^94). l-'ig. 4oS. 



In Insect Notes for K;I i (p. 22(), \\u\. 195, Me. Agr. Kxp. 

 Sta.) there was published an account of experiments made at 

 H'ighmoor Farm, Monmouth, Maine, upon wire worm exter- 

 mination. Both poisons and repellants were used without 

 avail in the field, and as a check several wire worms were 

 placed in a small jar with some grains with which special pains 

 were taken to coat them heavily with arsenate of lead. Several 

 days later, some larvae were seen, each half buried within the 

 grain, the hull intact except for a small hole the diameter of 

 the insect's body. A month later only the hulls of the grain 

 remained. All the wire worms were still alive and apparently 

 healthy. (Fig- 497-) Tobacco dust, lime and other repellants 

 also proved ineffectual. The successful growth of Canada field 

 peas in some of the infested [dots gave the suggestion that crop 

 rotation wotdd be the solution of the wire worm problem and 

 to that end potatoes, clover, beans, oats, corn, Canada held 

 peas, and a mixture of peas and oats were sown in plots joo feet 

 in length, but of varying width, separated from each other by 

 fallow areas 8 to 10 feet wide. A narrow strip plowed (> times 

 during the month of August 1911 was crossed at right angles 

 by the 1912 plots. Owing to the very late spring and. \\-et 

 fields, the planting was unusually late. Xo fertilizer was put 

 upon the field. About the middle of August the crops were 

 inspected. Making allowance for the lateness of planting and 

 lack of fertilizer, all the crops with the exception of the corn 

 were iti as good a condition as could be expected. The corn 

 was rather poor though much better than on the same held the 

 preceding season. 



In preparing the field for planting half of each plot was 

 plowed in June, the other half being only harrowed 



