96 ENTOMOLOGICAL NEWS. [Mar., 'l8 



Nov. 18, fatigued in 14 min. ; male rather stupid. 



Nov. 19, fatigued in 16 min. ; male flew very deliberately. 



Nov. 20, fatigued in 8 min. ; both stupid. 



Nov. 21, fatigued in 12 min. ; ate Very little. 



Nov. 22, fatigued in 11 min.; would not eat. 



Nov. 23, fatigued in 8 min. ; male flew about three minutes. 



Nov. 25, fatigued in 10 min. ; both nervous. 



Nov. 26, fatigued in 7 min. ; male would not fly. 



Nov. 28, fatigued in n min.; male flew well. 



Nov. 29, fatigued in 8 min. ; both stupid. 



Nov. 30, fatigued in 5 min. ; male would not fly. 



Dec. 2, fatigued in 7 min. ; both stupid. 



Dec. 3, fatigued in 4 min. ; male would not fly. 



Dec. 4, fatigued in i min. ; male would not fly. 



During these experiments each pair was kept in a paste- 

 board box with a covering of mosquito-bar. They were kept 

 in the laboratory and fresh leaves were supplied when needed. 

 It is well known that insects will not become stupid and lapse 

 into sleep, or partial-sleep, as readily under the unnatural con- 

 ditions of the best planned laboratory as they will in their nat- 

 ural environment. Accordingly, on Dec. 2, pair No. 3 was 

 placed in the outside laboratory. That night they sought 

 shelter in the soil. When disturbed the next day they seemed 

 anxious to get deeper into the ground, but on Dec. 4 they were 

 quite asleep. This seemed to confirm the assumption that the 

 increasing stupidity and lack of ability or inclination to fly, 

 even when confronted with the stimulus of a hand-bellows and 

 strong, disagreeable odors, was due to a physiological prepara- 

 tion for a period of inactivity. 



OBSERVATION OF HIBERNATING HABITS. 



In order to get exact data as to how these insects spend the 

 winter, outdoor insect-cages were provided. These cages were 

 1 6 inches square, and were covered on all sides with small- 

 mesh wire screen. The ground served as a floor the soil 

 being dug up and some leaves and sticks worked in to make it 

 easy for the insects to get as far beneath the surface as they 

 desired to go. 



On Nov. 12 the beetles were carefully separated into lots. 



