144 
Beth B. Norden and Aubrey G. Scarbrough 
Fig. 2. Prepupa of Andrena miserabilis. a. Larva, lateral view. b. Head, lateral view. c. 
Head, frontal view. d. Spiracle, frontal view. e. Spiracle, longitudinal section, f. Right 
mandible, ventral view. g. Right mandible, inner view. 
amphitheater and returned to the nesting site, usually carrying pollen. 
Flight activity of several hundred bees became concentrated in a region 
directly above their nests to a height of ca 1.5 meters. Zig-zag flight pat- 
terns exhibited within this region by exiting and returning bees suggested 
that they were conducting orientation maneuvers. Once above this region 
they followed a straight line of flight. 
Observations on 1-3 January 1977 were made during cooler tem- 
peratures (7-9°C) under overcast skies and during intermittent showers. 
Under these conditions activity was noticeably reduced, with little or no 
zig-zag flight activity above the nests. Returning bees flew to the vicinity 
of their nests, landed, and crawled (seldom directly) to their burrows. 
When departing, bees remained on the sand outside their nests for several 
minutes, then crawled 3 or 4 cm before taking flight. Males were found 
crawling along the ground beside females, and in two instances males oc- 
cupied burrows with females during a shower. 
