256 
Psyche 
[December 
This species lifted and carried moist soils with the chelicerae and 
first and second legs but not extensively. This solpugid burrowed 
more rapidly than E. magnus. 
Eremorax striatus (Putnam). — Females have been collected from 
surface nests under cow pies and rocks. 
Under laboratory conditions, males and females constructed only 
surface nests. Burrowing involved biting, raking, and plowing, with 
raking predominating. The palpi and first legs swept the soil back 
to the second legs for raking. Plowing was accomplished with the 
chelicerae held together. 
Eremobates durcingonus Roewer. — Burrow depths of 0.6 cm to 
1.9 cm have been recorded for second instar nymphs (Fig. 6). 
Depths of 3.8 to 12.7 cm have been recorded for females. Males 
(Fig. 2), females, and young (Fig. 5) were collected from surface 
nests beneath cow pies and stones and were also dug out of burrows 
2.5 to 5.8 cm deep under field conditions. A female and eggs were 
collected from a 3.8 cm burrow in the field. Burrows were construct- 
ed at a slight angle to the surface, 30° or less. One immature con- 
structed a burrow at a 45 0 angle. Burrows were completed in 30 to-. 
40 minutes by both males and females. 
In the laboratory, males, females, and young dug both nests and 
burrows. The usual biting, raking, and plowing were utilized. This 
species used the palpi to probe the digging surface while the first legs 
swept the loosened soil into the raking area. Raking was accomplished 
vigorously. The chelicerae were held together during plowing and 
the palpi and first legs used only to prevent lateral scatter of the soil. 
The palpi were also used regularly in tamping. 
Eremobates nodularis Muma. — Burrow depths of 3.8 to 10.2 cm 
were recorded for this species. Males and females were collected 
from nests under rocks ; males also from surface nests under cow pies. 
Burrows were constructed at a 45 0 to 90° angle to the soil surface. 
Males completed burrows in 15 to 30 minutes, females in 30 to 70 
minutes. 
In the laboratory, males and females dug both nests and burrows. 
Biting, raking, and plowing were all utilized. The palpi were used 
as probes during biting and raking. Palpi and first legs were both 
used to sweep loosened soil for raking. Vigorous raking seemed to be 
accomplished mainly with the second legs. Plowing was occasionally 
used; but most frequently, the load of loosened soil was lifted with 
the chelicerae, palpi, and first legs, and carried to the dumping area. 
During this activity, the chelicerae bit into the load but were held 
together or slightly open. This species frequently braced the third 
