18 Trans. Acad, of f^f. Louis 



liad prol)al)Iy boon used proviously l)y a Crahro wasp. 

 Four inches below the iop of the n'liiaiiiiiip: cavity, tliis 

 P]uiiioni(l motlior had hiid a mud floor and inscrtiMl a mud 

 ceilin*]^ one-half inch al)()ve tliis, tlius makin<^ only one 

 lar^e coll in the \\\\<j:. In lieu of makin.LC a cocoon, the 

 larva had varnished Uie walls of the room with some 

 substance which had hardened into a verv thin, onion- 

 skin-like, white tissue. Nothin.i^ remained to indicate 

 what the food supply had been. Another individual 

 made its nest in the interstices of a corrupfated cardboard 

 box in the laboratory. Others were seen on the flowers 

 of buck-brush on August 1, 1920. 



Odynerus (Ancistrocerus) tigris Sauss. [S.A.Rohwer]. 

 Found on the screen door, carryinii; a cateri)illar, at 

 Wickes, May 29, 1920. 



Odynerus (Ancistrocerus) caprn Sauss. var. [S. A. 

 Rohwer]. Taken from blackberry blossoms, May 29, 

 1920. 



Odynerus {Stcnodynerus) anormis Say. [S. A. Roli- 

 wer.] On flowers of buck-brush, August 1, 1920. 



Odynerus (Stenodynerus) pedestris Sauss. [S. A. Roh- 

 wer]. On buck-brush blossoms, "Wesco, Aup^ust 1, 1920. 



Alyson melleus Say. [S. A. Rohwer]. This was seen 

 on June 13, 1918, cnterin<i^ a hole in a l)ank. It was one 

 amon<j: many bee holes, so it mijt^ht have been the wasp's 

 own burrow or that of a bee. 



Nysson {II yponysson) raui [S. A. Rohwer].* One was 

 seen on August 5 to enter the bee burrow of Calliopsis 

 nebrascensis Cfd. [J. C. Crawford]. 



Nysso7i sp. [S. A. Rohwer]. The freshly-cut stems of 

 roadside weeds and bushes, includinii^ sumac, afTorded at- 

 tractive ])laces for the buildin,2: of stem-dwellers. In less 

 than two hours after the weeds were cut, two wasps of 

 this species had already dupf deep tunnels in the soft 

 pith. 



•Dwicrlbcd by S. A. Hohwcr. Troc. II. 8. Nat. Mus. r.3;i;6, 191^ 



