58 Bulletin Wisconsin Natural History society. [Vol. 9, Nos. 1-2. 



closed a portion of the morsel and ingested it. The female then 

 visited four or live of the largest larva? in apparently random order, 

 the morsel lasting for thirteen separate ingestions for these larva? 

 (10:21 a. m.) ; the mother wasp placed no food within any of the 

 cells but it was passed directly from the mother to the young; for 

 each ingestion, the morsel was held to a larva for about ten seconds. 

 After the morsel of food was exhausted, the female carefully cleaned 

 her fore legs by drawing them through the mouth; and also her 

 antenna? by drawing them through a portion of the fore leg as pre- 

 viously described (through the strigil). 



After exploring the nest and (apparently) resting, she left again 

 at 10:49 a. m., returning at 10:56 a. m. with material for enlarging 

 a cell. Abroad again at 11 :03 to 11 :13 a. m. and 11 :37 to 11 :39, bring- 

 ing the same material in her mandibles, which, each time, was dis- 

 tributed along the edges of some of the shorter cells. At 2 p. m. 

 she fed the larva? again and she was observed at 5 :09 to 5 :42 p. m.. 

 to make a trip abroad for food. Day warm, cloudy to fair, sultry. 



June S:— The mother wasp was observed to return with a morsel 

 of food (2.25 mm.) at 6:30 a. m„- and after the usual preparation 

 of it, she presented it in turn to six of the larva?; it sufficed for 

 eight ingestions. She was occupied thus a total of two and one-half 

 minutes; this morsel, as the ones of the preceding day, appeared to 

 be composed of macerated caterpillar flesh. She left again at 6:46 

 a. m., returning at 6:58 a. m.. apparently with food, as each larva 

 was visited in the usual way; this time, the food must have been 

 liquid, perhaps nectar, for it was not bulky enough to be seen. Left 

 again at 7 :01 a. m., returning at 7 :29 with building material. 



At 5 :41 p. m. the wasp returned to the nest with a large rounded 

 mass (3y 2 mm.) of macerated caterpillar flesh, which she held, re- 

 volved and chewed in the usual way for five minutes ; during this 

 process only the outer layer of the mass was pinched by the mandibles. 

 Then the larva- were visited in turn, the morsel held to them as pre- 

 viously described, and all of it had disappeared after one and one-half 

 minutes. Day clear, warm. 



j une Q; — The nest was first seen at 6:28 a. m., when the mother 

 wasp was absent. She returned after six minutes, carrying a large 

 food morsel. This was prepared in the usual manner — chewing it with 

 the mandibles— and it served for nine ingestions (the morsel was pre- 

 pared for three minutes and fed for two and one-fourth minutes) ; 



