364 AGRICULTURAL EXPERIMENT vSTATION. 



generically different from anything- theretofore known. Addi- 

 tional specimens were found in small numbers until late fall, and 

 it was suspected that it hibernated in the larval stage. It was 

 not until February 9, 1903, however, that Mr. Brakeley positively 

 determined this point by finding- nearly full grown larv?e in icy 

 swamp pools. Though there is no definite evidence, it is proba- 

 ble that the species is predaceous in habit, but what its food may 

 be is Lmknown. Whatever its prey, the capture is not due to any 

 activity of the Corethrella larva, for a more sluggish creature it 

 would seem to be impossible to find. 



