12 Trans. Acad, of St. Louis 



vive. They were also seen on a mid-September day at 

 Hematite, Mo. The day was dull and gloomy; despite 

 the fact that wasps of this genus are supposed to be sun- 

 loving creatures, more than a dozen of these were seen 

 on the sandy patches along Joachim creek, apparently 

 foraging, walking nervously about and exploring all 

 small hples and crevices. They were also out here on 

 October 19. 



Arachnophoctonus ferrugineus Say. [S. A. Kohwer]. 

 Two specimens of this Pompilid wasp were taken at 

 Wicks, Mo., on July 17, and one at Moselle, Mo., on Sep- 

 tember 23. On July 3, 1921, Mr. Ernst Schwarz and I 

 watched one of these wasps carry an enormous Lycosid 

 spider, Dolmedes idoneus [J. H. Emerton] crossing the 

 road amid many passing automobiles. The wasp 

 grasped the spider's palpi in its mandibles and was walk- 

 ing backwards, dragging the spider thus; this was no 

 easy task, and she was obliged frequently to tug and 

 strain when the spider became lodged against some ob- 

 struction. She was compelled repeatedly to leave her 

 property by the passing machines, but each time she left 

 it she took an elaborate flight of orientation, just as we 

 have seen other individuals of this species do when leav- 

 ing their prey when homeward bound to examine the nest. 

 Each time she returned to it readily, excepting one 

 time when for its safety we moved it two feet to place it 

 out of the track of the passing automobiles; as we ex- 

 pected, she returned to the exact spot where she had left 

 it, and after a prolonged search stumbled upon it as if by 

 accident. 



Anoplius hyacinthinus [S. A. Rohwer] was found feed- 

 ing on the flowers of a wild pea, August 17. 



Anoplius luctuosus Cress. [S. A. Rohwer] flew in at 

 the laboratory window on July 9. 



Pepsis elegans Lep. [S. A. Rohwer] was observed feed- 

 ing on the flowers of a composite on July 17, and on the 

 blossoms of the Madeira vine on August 11. On August 



