SAWFLIES. 151 



and Sawflies; and sometimes also with a kind of 

 tongue, suited for collecting moist food, as in the case 

 of the Bee. This trunk (as it is often called) is formed 

 of the feeler-jaws and lower parts of the mouth tJi a 

 much lengthened condition. 



The females have the abdomen supplied with an 

 apparatus which acts in some cases as a sting ; in 

 some as a piercer, by which they can insert their eggs 

 into other insects, or wherever they may select ; and 

 in some this ovipositor (or egg-placing aj^paratus) is 

 formed of several pieces, acting together like a saw, 

 whence one division takes the name of Sawflies. The 

 grubs are for the most part legless (much like the 

 well-known Wasp grubs) ; but it is important, for 

 practical purposes, to notice that the Sawfly division 

 may, with very few exceptions, be known in the cater- 

 pillar state from others of this order, and from all the 

 other kinds of caterpillars which we have noticed, by 

 having a larger number of sucker-feet. (See Fig. 117.) 



The Sawfly larvae, or caterpillars, have three pairs 

 of claw-feet, — like the caterpillars of Butterflies, and 

 of some Beetles ; but, with few exceptions, they have 

 six to eight pairs of sucker-feet. They are often called 

 caterpillars, and much resemble Butterfly caterpillars, 

 both in shape and in being often prettily coloured; but 

 they may (with the exception of the Corn Sawfly, and 

 a few others) be readily known from Butterfly or Moth 

 caterpillars by the larger number of sucker-feet. 

 "When there are twenty-two feet in all, that is, count- 

 ing true claw-feet, sucker-feet under the body, and 

 pair of sucker-feet at the end of the tail, it will be seen 

 there is only one segment of the body that is legless. 



When full-fed the Sawfly caterpillars often go down 

 into the ground, and many of them spin cocoons ; and 

 the change to the chrysalis takes place in a few days 

 in summer: later in the year the caterpillars lie many 

 months unchanged ; they may pass through the 

 chrysalis state in a fortnight, or less time. The 

 chrysalis (like most others of this order) is inactive, 



