SUBFAMILY OEDIPODINAE 57 
than it does S. collare. It is of lighter coloration and more uniformly 
maculate with small brownish spots, and in our specimens has usually 
a distinctly pink tinge. We have, as yet, found this species only in the 
southeastern portion of the State, usually on the sandy margins of the 
Mississippi and its tributaries. Upon the almost clear sand which it 
frequents, its light color and faintly marked pattern blend beautifully 
with the lights and shadows, rendering it almost invisible until it 
moves. Its flight is swift and strong, though not usually prolonged, 
and it rises with almost the swiftness of a Cicindela. 
Spharagemon aequale Say. 
Spharagemon aequale is larger than the preceding species and in 
our specimens very uniformly darker in color but very similar in 
structure to both that and S. collare. The carina of the pronotum is 
lower than in the preceding group and upon the prozona normally 
sinuate; the vertex is also somewhat broader. In all of our material 
the inner face of the hind femora is quite strongly suffused with red, 
especially in the basal portion, and the longitudinal dark bar is strong 
and distinct. We have found this species only on sandy soil in open 
places and usually with such scattered plant formations as the Oeno- 
theras, Chenopodii, and tufted grasses. It is very active and alert and 
has a strong flight, more prolonged than in most of this genus and has 
also the habit of running for some distance immediately upon alight- 
ing, frequently at an angle with the direction of flight, thus making it 
quite difficult to capture. In early morning, while the dew is still upon 
the vegetation, and late in the evening, it perches upon tall weeds and 
is generally rather sluggish. We have at times picked them from these 
resting places by hand in early morning, when in bright midday at 
the same spot it was difficult to take them even with a net. The 
species matures at Fergus Falls by early July. We have taken this 
insect at Mahtomedi, Mankato, Redwood Falls, Granite Falls, and 
Fergus Falls. We have also taken nymphs of what appear to be this 
species at Hibbing and Vermillion Lake in the northern part of the 
State. 
MESTOBREGMA Scudd. 
Mestobregma is a genus containing insects varying from small to 
medium size. The body is slender and compressed ; the head promi- 
nent, considerably elevated above the plane of the pronotum; disk of 
vertex with the posterior portion short and broad, tumid, the anterior 
portion narrowing rapidly and very strongly declivent; lateral carinae 
strong and high, extending from a point opposite the middle of the 
