296 



C. H. TURNER. 



slightly damaged. Under the conditions it could not possibly 

 have obtained food. Half exposed above the soil was the shed 

 chrysalis skin, and a short distance below the surface the empty 

 cocoon (Fig. 4) was found. 



MISCELLANEOUS ACTIVITIES. 



Experiment I. A ring oj water eight inches in diameter was made 

 on a glass plate and an ant-lion placed in the center of the dry space 

 that the ring surrounded. The ring was one half of an inch in width. 

 When the ant-lion reached the ring of water, it would usually 

 turn and move away from it. Often, in turning, its mandibles 

 would get into the water. In that case the mandibles would 



A 



11 I i i i i I i i i i I 



i i 



FIG. 13. The parts that form the sucking tube of the ant-lion larva, 

 mandible. B, the part that fits into the groove of the mandible. 



A, 



leave a broad water band wherever the creature went. After 

 its mandibles had become wet, on its next approach to the 

 water, it was apt to get some other part of its body wet. After 

 that it was apt to move, away from the light, on through the 

 water. 



Experiment 2. To see if there was anything about dirt as such 

 that would direct an ant-lion to it, a pile of dirt three inches in di- 

 ameter was placed in the center of a glass plate that was twelve inches 



