TEREBRANTIA. 

 TENTH REDINID.E. 



The saw-flies (Fig. 182, the pear-slug, Selandria 

 cerasi, Peck) have the thorax composed of three rings 

 and a sessile abdomen, the thoracic 

 and abdominal regions having a broad 

 connection. The mouth parts are for 

 biting, and are much simpler than 

 those of the bee. The 

 ovipositor is not mod- 

 ified into a sting, but 

 is a saw used for cut- 

 ting holes in leaves, 

 in which the eggs are deposited. 



The larvae (Fig. 182, a, represents 

 the larvae feeding on a leaf of the 

 pear ; a^ larva enlarged), having many 

 of the habits of the Lepidopterous 

 larvae, are caterpillar-like in form, and 

 are provided with mandibles for bit- 

 ing. They also have three pairs of 

 thoracic legs for locomotion and eight pairs of prop- 

 legs. They are not helpless creatures, but are able 

 to take care of themselves like the larvae of butterflies. 

 The caterpillar of the pear-slug burrows into the 

 ground, where it passes the pupa state. 



Fig. 182. 



Fig. 182, a. 



