ISELY: EUMENID^ of KANSAS. 281 



parts of two greenish caterpillars. Judging from the length 

 of time it took others of this genus to develop, it had probably 

 been stored not more than a week or ten days previously. 

 There were no freshly stored cells. One cell contained twelve 

 cast-off pupal cases of some small dipteron. This is the only 

 indication that I found of interference with the activities of 

 th's wasp by another insect. 



The larvce and pupae of 0. annulatus were like the larvse and 

 pupae of 0. papagorum, only larger. The mature larva was 

 15 mm. long and very stout, being 7 inm. in width at the 

 widest part. The pupae were about 13 mm. long. 



The capturing and subduing of the caterpillar prey by this 

 species I observed but twice. In both instances the cater- 

 pillar was Loxostege sticticalis. The first caterpillar was 

 taken on Russian thistle and the second on alfalfa. These ob- 

 servations were made in Trego county on July 12 and 13. 



In the first instance the wasp spent five minutes dislodging 

 the caterpillar from its nest. At last she seized the cater- 

 pillar by its anal end and deliberately dragged it backward 

 over the thi.stle stem for several inches, until they both fell 

 to the ground. The wasp then quickly grasped the cater- 

 pillar's neck, stung it three times under the thorax, and began 

 maxalation. This process continued for four and one-half 

 minutes. The wasp often rested, cleaning its abdomen and 

 antennae with its legs. When she started to fly I caught her. 



In the other instance the wasp worked much more rapidly. 

 She tore open the caterpillar'.? web, grasped it by the anal end, 

 and they both dropped to the ground. The wasp quickly seized 

 the caterpillar's neck and stung it three times under the thorax. 

 She then maxalated the caterpillar and started to drag it away. 

 After she had dragged it about five yards she took wing, cir- 

 cled high in the air, and disappeared. The entire process had 

 taken two minutes. 



0. anyiulatus was common hunting on the Russian thistle 

 and alfalfa in Trego county. 



Odynerus dorsalis Fabricus. 

 This large brown wasp was common in eleven of the twelve 

 counties covered by the survey, being collected regularly be- 

 tween June 26 and September 6. I have collected this wasp 

 as late as September 25 in Douglas county, on the State Uni- 

 versity campus. Like 0. arvensis, it was most readily found 

 in lowland pastures or by streams. 



