BULLETIN 94. 49 
face, an area at the base of each antenna, a patch beneath and 
posterior to the compound eyes and a narrow line above each 
black post-ocular stripe, and often the posterior portion of the 
occiput,also,are yellow. Sometimes the entire head,except the 
compound eyes,the vertex and the post-ocular stripes,is yellow. 
The pronotum may be entirely dark fuscous with a broad black 
band on the prozona on either side, or the sides of the prono¬ 
tum may be partly or entirely yellow outside of the black 
band of the prozona. The disk of the pronotum may be en¬ 
tirely yellow, or entirely rufous or it may be dark at the sides 
with a yellow or rufous median stripe of varying breadth. 
The femora may be yellowish shaded with dusky or they may 
be distinctly tinged with red. The hind femora may be 
dusky brown above with the lower half of the outer face yel¬ 
low, or the outer face may be dusky brown throughout. In 
others the outer face is dusky brown with a vellow or even a 
w w 
reddish margin. In still others, and these are not uncommon, 
the dark parts of the femora are blue or bluish-green in color. 
In some the color is a deep steel ‘blue. When these blue 
colors occur on the femora, the dark parts of head,thorax and 
elytra partake of the same tint. Those most highly colored 
with the blue often have the hind tibiae tinted with the same 
color. These highly colored forms are among our handsom¬ 
est grasshoppers and seem at first quite unlike the somber 
colored femur-rubrum as commonly described and seen in the 
east and yet there is so complete a gradation of forms between 
the extremes of coloration that I have not been able to sepa¬ 
rate out a distinct variety. It seems probable that these blue 
colored forms are what Dodge described as plumbeus. In 
fact he suggests that plumbeus may be only a local variety of 
femur-rubrum. At least I have been unable to find any char¬ 
acters that will hold to separate typical form of plumbeus 
from these highly colored forms of femur-rubrum. 
The males we have taken vary between 17 mm. and 26 
mm. in length and the females between 20 mm. and 26 mm. 
These are common variations. Occasionally a specimen is 
taken that seems abnormally small. This is especially true 
of occasional short-winged specimens that we have taken. 
Shorl-winged form . We have taken specimens of a short¬ 
winged form of this species, mostly in shaded places. The 
elytra in these have been between 6 •mm. and 7 mm. in length 
and reach a little beyond the middle of the abdomen. The 
males of this form have measured between 12 mm. and 16 
mm. in length and the females about 18 mm. These were 
mostly taken by Prof. Ball. 
