1972] 
Miller & Kurczewski — Entomogncithus 
67 
(mean 18.8, N = 74) cm below the top of the cliff. Relative to the 
entrance, the cells were found from 2.5 cm above its level to 13.5 
cm below it, averaging 5.5 cm below. The horizontal distance from 
the cliff face to a cell averaged 12.2 (4.5-21.5, N=66) cm. 
The number of cells per nest ranged from 3 to 20 (mean 10.7). 
Except for cells in tandem, there was no correlation between the 
age of the cell and its position in the nest. In each tandem series, 
the cell farthest from the entrance in terms of total burrow length 
was the oldest. Because cells in series occasionally curved back toward 
the entrance, an older cell was sometimes closer to the entrance than 
a newer one in absolute distance (Fig. 2b, c). In nests 1 and 2 
(Fig. 2a, b), the female moved farther away from the entrance as 
she constructed new series of cells. In nest 3 (Fig. 2c), worked 
on by two females in succession, the first wasp apparently constructed 
tandem series toward the entrance whereas the second one built a 
series of three cells near the front and then a fan-shaped cluster of 
four cells at the back. 
Transport and Storage of Prey. A provisioning female returned 
to her nest in flight, holding the beetle head-forward and venter-up 
with the middle legs. She usually hovered briefly in front of the 
cliff face before diving into the open entrance. The myriad of root- 
lets frequently made entry difficult and may have been responsible 
for many of the abandoned prey found beneath the entrances. 
The single hunting time recorded was 3 min. 15 sec. The same 
female twice took 2 min. to store a prey and return to the entrance. 
Temporary storage of beetles in the burrow at some distance 
from the entrance was recorded for three of the seven nests (Fig. 
2c, d ) . Such prey were placed head-inward and were loosely covered 
with sand particles. All of the beetles were partially paralyzed and 
moved their antennae and legs or flexed their elytra. 
Nest provisions. Prey taken from the Chittenango nests in 1970 
were determined as Altica ulmi Woods ( Chrysomelidae : Alticinae). 
Two specimens collected from nests at this locality in July and 
August 1971 proved also to be this species. E. J. Kurczewski (corre- 
spondence) took a memorialis female with A . marevagans Horn at 
Presque Isle in August 1971. Of the 220 A. ulmi preserved for 
identification, 46.8% were females and 53-2% males. 
The mean number of prey per cell was 5.1 (3-9, N=42). The 
total weight of the beetles per cell in 13 fully-provisioned cells 
ranged from 16.8 to 54.5 (mean 27.0) mg. Individual beetles weighed 
from 3.7 to 8.0 (mean 5.4, N=68) mg, whereas one female wasp 
weighed 7.0 mg. The beetles in the cells were positioned head- 
