EXPLANATION OF PLATE XII. 



CYLAS FORMICARIUS. 



Fig. i nified ten times. 



- Eggs thrust into potato, twice natural size. 

 \. Larva. 

 „ 4. Infected pi ■ 



5. 6. l'upa. 

 „ 7. Adult beetle, 



,, ■ . Antenna of female beetle (above) and of male (below;. 

 Ties alongside the figures show the natural 3izes.) 



