GRATEVIXE ROOT WORM o9 



tapering a trifle at each end. The shell is flexible and when a 

 number of eggs are crowded in a small space their form may 

 become somewhat distorted. The eggs are white when first 

 deposited, but soon assume a j-ellowish cast. On the fourth 

 day a narrow semitransparent band appears near each end. The 

 eggs of the clusters have a somewhat concentric arrangement 

 and thev range in number from 1 to 125. Several clusters are 

 represented on plate 1, figure 4. 



The young larva is subcylindric, about -^\ inch in length and 

 tapers somewhat posteriorly. The head is a pale, yellowish 

 color with the mouth parts ranging from light to dark brown, 

 the sutures and tips of the mandibles having the most color. 

 The head is somewhat flattened, bilobed and with the posterior 

 angles rounded. The mandibles are distinctly toothed. The 

 body is slightly smaller than the head, convoluted and distinctly 

 segmented. Each segment bears a transverse row of small 

 tubercles, from each of which a long hair arises. The spiracles,. 

 or breathing pores, are darker than the body and usually light 

 yellow. 



The nearly full grown grub resembles the newly hatched 

 individuals very much in general form and color. It is then 

 about f inch in length, with a yellowish brown head and the 

 mouth parts and adjacent sutures dark brown or nearly black. 

 The body has a greater transverse diameter than the head, is 

 distinctly segmented and bears numerous irregular transverse 

 rows of small setae, which are relatively much shorter than in 

 recently hatched individuals. The spiracles are well marked 

 and range in color from yellowish brown to light brown. The 

 general appearance of the grub is shown on plate 1, figure 4. 



The pupa ranges in length from about i to ^ inch and its gen- 

 eral features are represented on plate 1, figure 6. Its char- 

 acteristics have been minutely described by Professor Webster 

 as follows: " Color, white with pinkish tinge about head, thorax 

 and posterior extremity; head with a semicircular row of four 

 spines, the frontal pair erect, the other two smaller and diver- 

 gent; near anterior margin of thorax there is a similar row,. 



