IV 



AQUATIC CATERPILLARS 



235 



from wounds made in the tissues of the leaf, but 

 the essential facts still require confirmation by other 

 observers. 



Another aquatic caterpillar of which very little is 

 known, is Acentropus niveus. The larva has not 

 been described, but it is said to live on Potamogeton 

 pectinatus. The pupa makes a silken cocoon, and 

 the Moth emerges in July. 



