Ecological and Behavior Notes 23 



the ability, after several hours, to respond slightly to 

 stimulus, but died the next day. 



Priononyx bifoveolatum Tachenberg. [S. A. Rohwer]. 

 We arrived upon the scene, a mud bank with sparse 

 vegetation, just in time to see the wasp riding her hopper, 

 Melanoplus scudderi Uhler [A. N. Caudell] to her door. 

 She trundled it along in the regulation manner, riding 

 atop and grasping the hopper's antennae in her jaws. 

 She left it, as her sisters P. atratwm and P. thomae 

 usually do, beside the mouth of the burrow while she 

 went in for a final inspection of the interior, poked her 

 head out the door and dragged it in, and half a minute 

 later she emerged and began packing in the soil. The 

 burrow was only a small, sloping pocket in the earth, 

 similar to that of P. atratum but somewhat smaller. The 

 hopper gave only a slight response to stimulus, and died 

 the next day. The wasp's egg was attached exactly in 

 the place where P. atratum and P. thomae habitually 

 fasten theirs, on the right side of the body at the base 

 of the hind leg. 



Priononyx atratum Lep. [S. A. Rohwer]. A grass- 

 hopper, Melanoplus femoratus, which was taken from 

 this wasp lived for four days, August 1 to 5, 1920. Other 

 wasps of this species were taken on flowers of buck-brush 

 at Wesco, July 30, and on Aster multiflora as late as 

 October 19, 1918. 



Ammobia pennsylvanica Linn. [S. A. Rohwer]. Cap- 

 tured in the kitchen at Wickes, Mo., September 4, 1917. 



Sphex (Ammophila) pictipennis Walsh. At St. Louis, 

 in 1918, several of these wasps were seen out on October 

 12 ; one was even earnestly trundling a caterpillar home. 

 This was not the latest date of their appearance, how- 

 ever, for one was taken at Hematite, Mo. on October 19. 

 Others were taken in summer from the flowers of sweet 

 clover and buck-brush. We took possession of a cater- 

 pillar, Lenicania unipuncta [S. B. Fracker] which one 

 was taking home at Wesco, August 1 ; it lived six days. 



