slightly more in length, Avliite or yellowish in color, cylindrical in 

 ontline, terminating nln-nptly behind and tapering anteriorl}^, as 

 is illnstrated at Fig. 1, h. When examined more closely the pos- 

 terior end will be seen to bear two well-protected spiracles and to 

 be snrronnded by twelve conical tubercles, the middle two of which, 

 viewed from above, are slightly cleft, as shown in Fig. 3 (2). 

 The anterior pointed end bears the mouth opening, which is sur- 

 rounded by fleshy lip-like prominences and contains two protrud- 

 ing: hook-like structures, which are dark, hard and interiorlv con- 

 nected with a chitinous framework, which serves for muscular 

 attachment, as shown in the enlarged figure of the head of the onion 

 maggot, Fig. 1, e. It is by means of this mouth structure that the 

 maggot secures its food, for, although it cannot bite, it is able to 

 scrape the softer tissue, break the plant cells, and suck up the plant 

 juices and finely-divided tissue. Having once started its work^ 

 the maggot continues by a boring-like process, getting into the root 

 if the latter is soft enough, or else moving along the outer surface. 

 It is aided in its work by the decay which sets in at the broken 

 surfaces, causing the further softening of the plant tissue and its 

 consequent easier penetration l)y the insect. 



The maggot has no feet, and moves as follows : The posterior 

 segments of the body are first drawn up toward the anterior end^ 

 ^vhich is then ^^nshed forward while the hind segments are held 

 rigid, a matter Avhich can be easily accomplished, because the seg- 

 ments are more or less ridged. 



There is also on eacli side of the body, just back of the head, a 

 dark spot, and this, when sufficiently magnified, is found to be a 

 fan-like structure consisting of ten lobes. This is another spiracle 

 or breathing pore, and it ha^ been said that this species may be 

 separated from the onion maggot by the number of its lobes or 

 divisions. This may be true in general, but an examination of 

 our specimens showed the number to vary in both species, so that 

 identification, based upon these structures alone, would be some- 

 what uncertain. 



Having become full-grown, the larva goes into the earth for half 

 an inch to an inch from the root on which it has been feeding, 

 gradually becomes shorter and oval in outline, while the skin be- 

 comes harder, smoother and of a chestnut brown color. Sometimes 

 this change takes place on the surface of the ro<'iT, or even within 

 the galleries made by the maggot. In this stage it is known as a 



