60 bulletin 94. 
Habitat. Paonia, Palisades, Rifle and Dolores, Colorado, during the 
months of July and August. 
I11 the McNeill table of species of Trimerotropis this insect 
will fall into the vinculata group with salina , similis pallid ipen- 
nis and longicornis (The latter a new species described by E. M. 
Walker in Can. Ent. xxxiv, 4). That portion of the table may 
therefore be modified as follows: 
/'. Lower sulcus of posterior femora light, with one preapical black 
band, or black, with two light bands, one preapical and one med¬ 
ian, the latter not merely interrupting the black on the edges of the 
sulcus, but in the bottom as well. 
•p 1 . Fuscous band in its usual position in the middle of the wing. 
Spur extending less than half way to the base. 
h l . General color light cinereo-ferruginous. The bands of 
tegmina well marked and rather strongly converging to¬ 
wards the posterior edge.. inconspicua n. sp. 
h 2 . General color dark fuscous brown, permitting little con¬ 
trast in the bands of tegmina, the latter not markedly con- 
converging towards posterior edge. 
1 1 . Metazona scarcely more than one and one-half times 
as long as prozona. Fuscous band variable. 
j 1 . Fuscous bands of wings very broad, occupying 
nearly one third the length of the wings, apical por¬ 
tion with only a few fuscous dots. salina McNeill. 
j 2 . Fuscous bands of wings narrower, occupying less 
than a fifth of the lenght of the wings, apical portion 
rather strongly infuscated. longicornis Walk. 
1 2 . Metazona twice as long as the prozona. Fuscous 
band rather narrow, occupying no more than a sixth or 
seventh of the length of the wings... similis Scudd. 
g 2 . Fuscous band entirely beyond the middle of the wing, mak¬ 
ing the length of the disk equal to the width. Fuscous spur ex¬ 
tending more than half way to the base. pallidipennis Burm. 
Z 2 . Lower sulcus of the posterior femora black, with but one preapi¬ 
cal light band. vinculata , huroniana, collaris, fratercula , saxa- 
tilis, and sordida. 
Aeoloplus minor new species. 
A small, slender, short-winged insect with pinkish or light purplish 
hind tibiae, in which the supraanal plate of male resembles quite closely 
that of the longer-winged Ae. tenuipennis Scudder, from Arizona. 
Head a little longer than the front edge of pronotum, the occiput 
somewhat ascending; eyes only moderately prominent, the vertex be¬ 
tween them a little narrower than the frontal costa between the antennae 
and deeply sulcate to upper end of costa, in both sexes; the latter 
scarcely sulcate even at the ocellus; antennae short and slender, scarcely 
reaching hind edge of pronotum in either sex. Pronotum with the ante¬ 
rior lobes about equal, the disk smooth and evenly rounded, without a 
perceptible median carina; hind lobe slightly expanding posteriorly, the 
the surface punctulate and with a slight median carina, the hind edge 
broadly angulate. Tegmina and wings abbreviated, rather narrow and 
evenly tapering, reaching from the middle to three-fourths the length of 
abdomen. Hind femora robust and furnished at base with a large down¬ 
ward projecting tooth, reaching beyond the tip of abdomen in both sexes. 
Apical segments of male abdomen only slightly enlarged, the last ven¬ 
tral segment ending in a short, blunt, upward projecting point; cerci 
nearly as long as supraanal plate,evenly tapering on basal three-fourths, 
equal beyond, the apical portion gently bent inwards; supraanal plate 
subtriangular, the sides sinuose and having the apex produced and 
