FIELD WORK ON COLEOPTERA. 6 1 



rake, and some sort of dipper. The water net may be 

 used, or an ordinary tin dipper tied to the end of a long 

 stick will do very well. Or someone of the party may 

 wear hip boots, and you can make him do all the " bag- 

 ging" of the game. 



The water scavenger beetles may usually be found 

 clinging to grass stems under water; though they may be 

 found occasionally coming to the surface for a store of air, 



FIG. 24. Great water scavenger beetle, Hydrophilus triangul 

 (Natural size.) (Kellogg.) 



FIG. 25. Egg case of great water scavenger beetle. (Twice nat 

 size.) (Kellogg.) 



laris. 

 'wice natural 



or as they paddle from place to place. The one who 

 goes on a beetle hunt of this kind cannot go with whoop 

 and hurrah, plunging with a swish into the water; that 

 would be the last of specimen hunting for several hours 

 at least. One has to go about it quietly, creating as little 

 disturbance as possible in the region to be investigated. 

 It is a sort of a Mahomet-going-to-the-mountain game. 

 If you give them half a chance to know that you are 

 coming they will disappear; and don't think that they 

 will come out again until they are reasonably sure that 



