REPORT OF ENTOMOLOGIST. 
65 
female; vertex a trifle narrower (tf) or somewhat wider (9) than the 
basal antennal joint, roundly depressed and quite deeply sulcate with 
the lateral carinae rather coarse; frontal costa prominent, plain, the sides 
nearly parallel, a little wider than the vertex between the eyes in both 
sexes and reaching the clypeus. Antennae slender, of moderate length, 
about reaching, 9> or somewhat surpassing, J', the tip of prono- 
tum. The latter with the sides of anterior lobes somewhat tumescent in 
cf, smooth in 9, no wider at last transverse incision than in front, 
the dusky band at sides furnished near the center above with a light 
patch, the posterior lobe a little the shorter, expanding and broadly 
rounded behind, its entire surface quite profusely punctate; median Car¬ 
ina nearly equally prominent throughout. Prosternal spine coarse, 
conical, moderately long, directed a little to the rear and with the apex 
blunt. Tegmina lateral, elongate oval, reaching to or a little beyond the 
apex of the first abdominal segment. Abdomen with the sides strongly 
piceous, especially in the (J's. Hind femora rather slender, not quite 
reaching (9) or a little surpassing (tf) tip of abdomen, flavous inside 
and below, crossed on upper half by two dusky bands, the apex also 
dark ;middle and front femora only moderately swollen or obese in males; 
hind tibiae dull plumbeous, profusely hirsute. Apical portion of male 
abdomen only gently club-shaped, the tip very little upturned, the sub- 
anal plate entire at apex, in nowise notched or produced; supraanal plate 
triangular, about equally long and broad, the sides straight, the tip an- 
gulate; the furcula as described and figured for M. aridus Scudd. (PI. xiv, 
fig. 3); cerci also as in that species, except, perhaps, that they may be 
slightly longer in proportion and a little more bent inwards on their out¬ 
er half. 
Length of body, 13.5 mm., 9 > 18-20 mm.; of antennae, 7 mm., 
9,6.5 mm.; of pronotum, (^, 3.1 mm., 9 , 4 mm.; of tegmina, <3\ 2.6 mm., 
9, 3 mm.; of hind femora, 8 mm., 9 > 9 mm.;. 
Habitat. Antonita, Dolores and Durango, Colo., 3 and 5 $s Aug¬ 
ust (Collection Colo. Agr. College). 
In order that the position of this species may be more clearly 
indicated the following portion of Scudder’s table is modified so 
as to include it and is here appended: 
g 1 . Cerci of male long and very slender, in the middle not one-half 
the width of the frontal costa, last dorsal segment of male with a 
pair of strongly oblique submedian sulci outside the furcula; sub¬ 
genital plate not elevated apically (3. Aridus series). 
h l . Hind margin of pronotum truncato-emarginate; disk of met- 
azona fully twice as broad as long; tegmina relatively slender, 
widely distant. 
41. Disk of pronotum coarsely and uniformly punctate; cerci 
of male apically’enlarged and inferiorly accuminate at apex. 
Humphreysii Thom. 
i 2 . Disk of prozona coarsely punctate only along anterior 
margin; cerci of male apically equal, round at tip. 
nitidus Scudd. 
h 2 . Hind margin of pronotum obtuse angulate or broadly round¬ 
ed; disk of metazona less than twice as broad as long; tegmina 
variable. 
4 1 . Larger (d 1 17.5 mm.); tegmina relatively broad, approx¬ 
imate, at least in the male. aridus Scudd. 
i 2 . Smaller (13.5 mm.); tegmina quite slender, lateral, and 
greatly separated above in both sexes. tristis n. sp. 
Melanoplus flabellifer brevipennis new variety. 
The specimens before me, eight in number, and coming from Pao- 
nia and Palisades in western Colorado agree quite well with the general 
