30 THE ACRIDIIDAE OF MINNESOTA 
Anterior tibiae clavate, with a distinct groove on outer face; size of males 
about 14 mm. in length clavatus 
Anterior tibiae only moderately and regularly expanded apically in the males, 
which are about 18 mm. in length clepsydra 
Gomphocerus clepsydra Scudd. 
All of the material that we have seen or collected from Minne- 
sota appears to belong to Gomphocerus clepsydra, taking McNeill’s 
Revision of the Tryxalinae as a basis for classification. The anterior 
tibiae are not noticeably clavate and bear on the outer face no trace of 
such a groove as that mentioned for G. clavatus. The size of the males 
is subject to too much variation to be of real value, since we have 
before us specimens ranging from 11.5 to 21 mm., yet identical in all 
structures and in some cases taken together. In 1911 a brood of this 
species reared in cages from the egg, gave two males measuring 13 
mm. and 19 mm. respectively. The coloration is widely variable and 
ranges from green to neutral grayish and through all intermediate 
shades to distinctly brown forms. This color variation is, however, 
much more common among the females than among the males, which 
are in general a rather light brown. The length of tegmina and wings 
is also subject to great variation, especially among the females, where 
it is often very short, while in the males it usually reaches or surpasses 
the tip of the abdomen. This interesting little species has been taken 
in the western part of the State at many points, always in open places, 
but ranging from the dry soil of gravelly hills to the lowlands and 
open flats of the Red River Valley proper. It matures early in July 
and is especially abundant in August and early September. We have 
taken it at Crookston, Ada, Fergus Falls, Redwood Falls, Morton, 
Pipestone, Worthineton, Detroit, and Glenwood. 
AGENEOTETTIX McNeill 
The genus Ageneotettix is made up of small insects very similar 
in general aspect to the Oedipodinae,; the vertex somewhat declivent, 
broader than the frontal costa at the clypeus; median carina wanting 
and the lateral carinae slight; lateral foveolae subquadrate, about twice 
as long as wide, plainly visible from above; face moderately oblique 
and more or less arcuate; antennae filiform and exceeding the length 
of the head and pronotum in both sexes. Median carina of pronotum 
quite distinct and cut once behind the middle by the principal sulcus; 
lateral carinae are strongly sinuate and the posterior margin of the 
metazona is rounded. The lateral lobes of the pronotum are higher 
than long and the anterior and posterior margins nearly straight and 
