368 Annals Entomological Society of America [Vol. VIII, 
most exposed part of the plant, and are always found on the 
upper parts of the plantsin that region. This plant also extends 
into the arid region, but in less numbers. 
While collecting a wingless ground inhabiting Capsid on a 
sunny mountain slope in Colorado, the writer found a colony 
of Vanduzea vestita feeding upon the stem and roots of an 
Amorpha beneath a stone. They were as usual attended by 
ants, so the excavation beneath the stone and around the stem 
of the plant may have been made for them by the ants or may 
have existed previously. At any rate, there they were in 
numbers, larve and adults, in the hollow beneath the rock 
and in a circle around the stem beneath the ground, a very 
few being above the ground line. 
Since that time a number of colonies have been found 
extending down into the ground for an inch or two and occa- 
sionally having lateral galleries. Frequently they would be 
found gathered around the stem for an inch above and below 
the ground line under clumps of Psoralia or Amorpha, where 
the branching clump served as a protection in itself. 
Campylenchia curvata Fabr and Publila modesta Uhl 
have both been found occupying similar situations under clumps 
and in excavations around stems of their food plants. All these 
observations were made in very dry hot situations, desert or 
dry mountain slopes for the most part. In damper situations, 
such as river bottoms, thickets, mountain valleys and especially 
in irrigated alfalfa fields curvata will be found on all parts of 
the plants. 
