60 PAPERS ON CEREAL AND FORAGE INSECTS. 
Experiment Station, found pup in the same locality November 4. 
If we allow 8 days as the egg period and 37 to 41 days as the larval 
period, as determined by Mr. Kelly in Kansas, the eggs, Judging from 
the records just mentioned, are deposited in North Carolina from 
about June 1 to September 20, or during a period of approximately 
4 months. Mr. I. J. Condit found a nearly full-grown larva at 
Arlington, Va., June 30, 1906, which confirms in a general way the 
preceding observations. 
THE LARVA. 
(Fig. 19.) 
Quite naturally the larva of this species closely resembles that of 
Sphenophorus maidis. The principal differences are brought out in 
the illustration of S. callosus. The head (fig. 19,), is more slender, 
especially toward the vertex, the area between the Y sutures is nearly 
. smooth and quite different in 
outline from that of S. maidis 
(fig. 19, c) drawn on the same 
scale. In this latter species 
the space is shallowly sculp- 
tured, with the sutures more 
sinuate. The larve of both 
species vary greatly in size, 
and it is doubtful if im this 
respect they differ materially 
from each other. 
Mr. Caudell found the larvee 
among the matted roots, 
where they form cells and 
where they are frequently 
seen completely embedded in 
Fic. 19.—a, Larva of the ‘“‘curlew bug’’ (Sphenophorus the chufa. These they hollow 
callosus); b, head of same; c, head of larva of the out, leaving only the hull. 
ony (Sphenophorus maidis). Enlarged. They are sometimes so nu- 
merous that frequently as 
many as a dozen can be taken in a single bunch of roots. 
Mr. I. J. Condit, on October 8, found the larvee in chufa at Arlington 
Farms, Va., usually from half an inch to an inch below the surface 
of the ground. They seemed quite capable of subsisting upon the 
dead, perfectly brown, and nearly rotten substance of the leaves, 
stems, and crowns of the plant, but they also perforated the roots. 
Mr. F. B. Hopkins observed, on June 26, also at the Arlington 
Farms, Va., that the larvee were operating in the crown of this same 
plant, Carex frankiv. 
Mr. G. L. Swindell, in a communication dated August 6, 1900, 
states that at Swindell, N. C., the larve injured the roots of rice by 

