64 FIELD ZOOLOGY. 



same field. Can you find small and large larvae? Do 

 these beetles have any enemies coming under your obser- 

 vation here? 



In setting up a beetle to go into the collection box 

 the pin should go through the body to one side of the 

 middle line, through one of the elytra, never between the 

 elytra. Set the beetle well up toward the top of the pin, 

 on the upper third, perhaps, so that the insect can be 

 handled conveniently, and at the same time the legs will 

 be far enough above the paper to be removed from the 

 danger of being broken off. In classifying a beetle it is 

 necessary to know the number of joints in the tarsus, 

 whether the joints are all equally movable upon each other 

 or not. The insertion of the basal joint of the hind leg, 

 with respect to the first segment of the abdomen, also 

 comes in as part of the necessary means toward finding 

 what particular beetle you may have under examination. 



