408 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 6 



light thrown upon different parts of the cage, produced no responses, 

 the insects in all cases adhering to their geotropic re-actions. 



Adalia bipundata, Coccinella 9-notata and Megilla fuscilabris. In 

 order to determine the distance over which a Coccinellid would travel 

 during a negative gfeotropic response in the absence of food, speci- 

 mens of Adalia hipun data were taken while feeding, kept for five hours 

 without food and then placed on the bottom of a fifteen foot vertical 

 stick. The following table shows the distances travelled by ten dif- 

 ferent beetles. The stick was placed out of doors in the shade, the 

 temperature being 70° F. 



The length of time, from the start until they flew away was also 

 noted and this varies considerably, many of the beetles resting for 

 <5omparatively long periods. 



9 feet, 2 inches, 18 minutes 



The average distance covered comes to a little over eight feet and 

 in no case was the top of the stick reached. 



The following table gives the distances covered by Coccinella 9- 

 notata, both in the sunlight and shade. 



Coccinella 9 — notata Hbst. 



Sunlight, Temperature 83" F. 



A 1 foot, 



B 



C 1 foot, 



D 1 foot, 



E 1 foot, 



F 



G 



H 2 feet, 



9 inches, 3 minutes 

 6 inches 1 minute 

 6 inches, 

 1 inch, 



4 inches, 

 10 inches, 



5 inches, 



2 minutes 



3 minutes 

 2 minutes 



4 minutes 

 2 minutes 



9 inches, 1 minute 



These Coccinellidse were taken while feeding and kept two hours 

 without food. With this species, the average distance in the sunlight 

 is 1 foot, 3 inches and 7 feet, 6 inches in the shade. 



The next table is for Megilla fuscilabris Muls. These individuals 

 were also taken while feeding and kept one hour without food. 



