10 Trans. Acad, of St. Louis 



Epeira prompta [J. H. Emerton] was only three-fourths 

 inch under the surface of the ground. The wasp's ^gg 

 was on its back, but evidently the Dipteron had also been 

 successful in its quest, for three maggots were around 

 the Qgg. The spider was not dead, and for four days 

 thereafter responded freely to stimuli. 



This wasp was also seen feeding on the flowers of buck- 

 brush at Wesco on August 1. 



Episyron quinquenotatus Say. [S. A. Rohwer]. Sev- 

 eral were seen on the sandy beach at Creve Coeur Lake 

 when it grew warm between one and three o'clock on 

 October 13. 



Episyron maneei Bks. [S. A. Rohwer]. This wasp 

 walked across the road and into the dense woods, walk- 

 ing backwards and dragging a spider, Cylosa conica 

 [Emerton] at about 6 p. m. on July 7. The spider, when 

 taken away, seemed dead, but three days later it showed 

 signs of life, reacting abundantly to stimulus, and by 

 July 18 it had wholly recovered. May it be that with 

 certain Pompilids the process is reversed — that instead 

 of the sting causing slight injury and slow death, the 

 sting here causes immediate total paralysis and slow re- 

 covery? 



Pompiloides americanus Beauv. [S. A. Rohwer]. Sev- 

 eral of these were seen in the wheat stubble in early 

 September, and on October 3 one was carrying away a 

 spider, Pardosa nigripalpis Emerton [N. Banks]. 



I also saw this red-banded Pompilid walking about the 

 sand at Wickes, Mo., on October 3, 1917. Without pre- 

 liminary warning it plunged into a crevice and soon came 

 up again with a medium-sized spider, later identified as 

 Pardosa nigripalpis [Emerton]. This is one of the vag- 

 abond hunting spiders, some of which, according to War- 

 burton*, burrow in the loose sand. The wasp, with its 

 jaws inserted in the ventral portion of the spider's ab- 



•C«mbridg« Nat. Hkt. 4, p. 417. 



