vi] LARVAE AND THEIR ADAPTATIONS 69 



'anchor process' or 'breast bone.' Along either side 

 of the body is a series of paired spiracles, each usually 



Fig. 20. Crane-fly (Tipula oleracea), a, female ; &, larva (' leather- 

 jacket ' grub). Magnified twice. 



situated at the tip of a little tubular outgrowth of 



