296 KANSAS UNIVERSITY SCIENCE BULLETIN. 



one-eighth of an inch in thickness. The particles of sand in 

 the partitions seemed to adhere much better than the sand in 

 the tube. This led me to think that some fluid had been added 

 to it. 



All of the cells were supplied with caterpillars. In one cell 

 two were stored; in another were four, and in each of the 

 others were three. The caterpillar was a rather stout, naked 

 noctuid. In color it was light green ; it had two rows of black 

 dots on each side and many white lines on its back and sides. 

 It was from 23 mm. to 25 mm. long. 



Two eggs were found. They were suspended from the ceil- 

 ing of the cells at the end farthest from the entrance. The 

 eggs were shaped like those of Odynerus. They were 3.75 

 mm. long by 1.2 mm. in diameter. The threads by which they 

 were suspended were about the same length as the eggs. 



This wasp's manner of return to her nest was noteworthy. 

 She would always alight in the middle of the sand, and then 

 go directly through the weeds to her burrow. She did not 

 always fly directly to the road, however, on her return trips. 

 On several occasions she circled over the Chenipodvum patch 

 before alighting. Perhaps she was disturbed by my presence. 

 When leaving the nest she always went into the open before 

 taking wing. On coming to the nest she would always appear 

 high in the air, and on leaving she would always rise high at 

 the start. This high flight may have been because her hunting 

 ground was a long distance from her nest. 



Another burrow of Pterochilus 5-faciatus I found in a sandy 

 bank by the Smoky Hill river. While walking along the edge 

 of the stream I saw a large wasp dash from a burrow. Think- 

 ing she was a bembecid, I swept at her with my net and quickly 

 put her in my killing bottle, and so spoiled the opportunity for 

 observation. 



When I saw that I had taken a eumenid I opened the burrow. 

 I found just a straight burrow three inches deep leading ob- 

 liquely into the sand. This burrow was located in a barren 

 bank of loose sand about four feet above the river and not ten 

 feet from its edge. The observation was made July 12. 



Odynerus hildagi Saussure. 

 While watching the nest-building of 0. papagornm in clifl's 

 in Ness county, my attention was attracted to a medium-sized 

 Odynerus also entering a burrow in the face of the cliff'. Later 



