Vol. XXlv] ENTOMOLOGICAL NEWS 4OI 



Figure 4 is the position of the cell when commenced, with the 

 opening toward the light ; Figure 5 gives the position in which 

 it was finished, with the opening away from the direct source 

 of light. 



It is interesting to note that while the cell was begun on a 

 downward slope, it was finished on an upward slope. 



At 4 P. M. I found the mother filling this with spiders. I 

 pulled the last spider out of the cell and deposited it just at the 

 opening. The returning wasp entered at the window and af- 

 ter making a few circles it flew into the box and directly to 

 the nest where with its head it pushed the protruding spider 

 into the cell and deposited another, but it seemed just a little 

 confused. Upon returning later in the afternoon I found that 

 she had completed the cell and sealed it securely. I knew that 

 if she should return now it would be for the purpose of add- 

 ing other cells. To test her ability to repair any damage done 

 to the cell I removed the soft covering which sealed it. It was 

 now 5 P. M. and I left, but the next day I found that the 

 damaged spot had been repaired and the fifth cell begun. Per- 

 haps the wasp returned to add another cell to the nest and ac- 

 cidentally covered the opening without knowing that vandalism 

 had been committed. Perhaps she realized that mischief had 

 been done, for while I waited all day she never returned, and 

 although I watched this nest from day to day for a week I 

 found no evidence of new work, so I fully suspect that she had 

 no desire to be crossed in her work. 



Hungry Larvae. 



A larva of Trypoxylon albitarse had completely exhausted 

 the supply of spiders which had been provided for it, but had 

 not yet made its cocoon. This gave an opportunity to see if a 

 larva would eat more than the usual amount of food provided 

 for it. 



A large spider was removed from another nest and placed 

 with this larva. Within six hours this had been devoured. 

 Then two other large spiders were placed in the cell, and when 

 an examination was made two days later it was found that the 



