310 Annals Entomological Society of America [Vol. V, 
are always two such spines of about equal length and much 
larger and longer than the others. 
All the segments of the legs are more or less covered with 
coarse punctures and long hairs. 
The three pairs of trochanters are well developed and are 
longer at the outer end where they articulate with the femur 
which also enlarges outward to where it articulates with the 
tibia. The fore tibia has at its end just beneath its anterior 
edge a large, curved, much modified spine which in connection 
with a corresponding modification at the base of the first tarsal 
segment, acts as a cleaning apparatus. Beginning at the base 
of this enlarged spine on the tibia and extending backward 
along the anterior margin is an area of short, fine hairs set close 
together to form a pad-like structure. This is not so strongly 
developed in the male but there is a sericeous appearance in its 
place. Beneath the hind margin near the outer end three stout 
spines usually project and a row of short stout spines projects 
from beneath the edge of the end. 
There are five tarsal segments. The first and fifth are much 
longer than the others and in the female the tarsal segments of 
the fore leg are somewhat flattened. Their posterior edges 
bear a row of long stout spines and their ends and anterior 
edges have a row of similar spines except the part of this edge 
of the first segment which is opposed to the large modified spine 
of the tibiz. Here the edge is sharply concave and has short, 
blunt, tooth-like projections. On the ventral surface of the 
same segment, behind this concave edge and near its base, a 
row of long stiff hairs projects downward. 
The dorsal surfaces of the mid and hind tibiz are set with 
longitudinal rows of stout spines. The mid and hind tarsal 
segments except the last, are cylindrical and bear irregularly 
set spines. Their ends are encircled by a row of stout spines. 
The relative size of the segments of the legs increases from 
front to rear and there are no spines on their ventral surfaces. 
SEX DIFFERENCES. Most of the differences of sex have been 
mentioned above. Some of the more conspicuous are restated 
as follows: In comparison with the female, the male is much 
more slender and always smaller. The outline of the clypeus 
is much different; the antenne of the female have twelve seg- 
ments which are short, blunt and recurved while those of the 
male have thirteen segments and are long, slender and usually 
