REPORT OF ENTOMOLOGIST. 6l 
rounded, the surface practically as descibed for .4e. tenuipennis. Valves 
of ovipositor slender, short. 
General color testaceous, varied with the usual brown markings, 
in some specimens with an olivaceous tinge, especialy on tegmina and 
hind femora. Sides of basal abdominal segments and about base of 
supraanal plate and cerci dark brown or piceous. Posterior femora with 
the usual dusky bands which are some shade of olive or brownish olive, 
the genicular lobes and base of tibiae a little darker, the latter decidedly 
pinkish or pale lilac, in some specimens changing to glaucous apically. 
Length of body, 12 to 14 mm., 9,14 to 15 mm.; of pronotum, (J 1 , 
3.1mm., 9,3.85 mm.; of antenae, J', 6 mm., 9? 5 mm.; of tegmina, <J\ 
6-7.5 mm., 9> 6.5-7.5 mm.; of hind femora, 6 mm,, 9, 8 mm. 
Habitat. 3s and $s, Delta, Colorado, July 13, 1901. 
The annexed portion of Scudder’s table will show the affinities of 
the present species: 
d 2 . Cerci of male tapering almost uniformly through the basal 
three-fourths, only the apical half or less equal. 
e l . Larger. The tegmina and wings almost as long as abdomen. 
Hind tibiae pale glaucous. plagosus Scudd. 
e 2 . Smaller. Tegmina and wings from one-half to three-fourths 
as long as abdomen. Hind tibiae pinkish or pale purplish. 
minor n. sp. 
Hesperotettix Gillettei new species. 
The distinguishing characters of the present species are the non¬ 
ob scured transverse sulci of pronotum, the very narrow tegmina and 
bright salmon-colored anterior and middle, as well as the entire upper 
edge and pregenicular annulations of hind femora. 
A bright grass-green locust with prominent white lines on thorax 
and along humeral angles of tegmina. In comparison with Hesp. viridis 
it is a somewhat slenderer insect of a more subdued and uniform color 
in which the pronotum is less expanded posteriorly and the tegmina and 
wings are decidedly narrower and show a variation in length from about 
one-half as long to a trifle exceeding that of the abdomen,a little longest 
in the males. It differs from its nearest ally, Hesp. festivus ,in being of a 
much more uniformly cylindrical form and greenish color, in its more 
cylindrical pronotum and the heavier hind femora, the shorter and heav¬ 
ier cerci and the slightly more elevated and blunter apex of subanal 
plate of male abdomen. 
Length of abdomen, (J*, 15 mm., 9 ? 21 mm.; of pronotum, 3.5 
mm., 9,5 mm.; of antennae, 7.5 mm., 9, 6.5 mm.; of tegmina, (J', 6 
to 11.5 mm., 9, 7.5 to 16 mm.; of hind femora, 9 mm., 9» 12 mm. 
Habitat. Rifle, Colorado, July 25, js and 9s; Gleuwood Springs, 
September 15; Delta, July 13 and Grand Junction, July 
29, September 16. 
Hesperotettix coloradensis new species. 
A short-winged moderately robust insect which is quite closely 
related to H. curtipennis , but differing from it by its somewhat slenderer 
form, slenderer and shorter hind femora, the much shallower and less 
prominent transverse sulci of pronotum, the slenderer and longer valves 
of the ovipositor, and in lacking the pale border above dusky band on 
sides of pronotum. Otherwise the two forms are quite similar in gen¬ 
eral appearance. 
Head small, eyes rather prominent; the vertex narrow, about as 
wide as basal (9) or as second (cJ) joint of antennse, rather deeply sul- 
cate in male, less so in female; frontal costa moderately broad, the sides 
nearly parallel, profoundly silicate throughout. Antennse with the joints 
somewhat depressed and heavier tnan usual in the male, in female nor- 
