58 bulletin 94. 
in addition to the apical ones which are somewhat longer than the oth¬ 
ers ;hind tarsi about one-third the length of the hind tibise,joint 2 twice as 
long as 3. Cerci rather slender, in length less than the greatest width 
of hind femora and abruptly bent downwards at about the middle. 
Length of body, 12-25 mm., of pronotum, 3.45 mm., of fore fem¬ 
ora, 4.2 mm., of hind femora. 9.65 mm., of hind tibiae, 10.5 mm. 
Habitat. A single November 17, at Grand Junction, Colorado. 
On account of its uniform pale color this insect reminds one 
at first glance of all three of the following named species; viz., C. 
alpinus Scudd., C. pallescens Bruner, and C. vinculatus Scudd., 
from all of which, however, it differs in several important points 
as indicated in the description. 
Agensctaifix aecidentalis new species. 
Very similar to both A. scudcleri and A. deorum , but differing from 
both of these in its somewhat slenderer form and smaller size, as well 
as in the fewer (9) spines on the outer row of hind tibiae, and in its nor¬ 
mally somewhat abbreviated tegmina and wings. 
* Length of body, J 1 , 10.5-13 mm., 9, 15-18 mm.; of pronotum, $ 
1.95-2.10 mm., 9? 2-2.15 mm.; of tegmina, 7-9 mm., 9> 9-10 mm.; of 
hind femora, J\ 7.25-9 mm., 9) P.5-10 mm. 
Habitat. Various localities in Colorado west of the main range, 
during the months of July, August and September (Col¬ 
lection Colorado Agricultural College). 
Whether or not these, are distinct, or only well marked geo¬ 
graphical forms of a single rather variable species, is not certain 
now. However, the following brief synoptical table will show the 
main differences among these forms: 
A 1 . Normally with somewhat abbreviated tegmina and wings in 
both sexes. Hind tibiae nine spined in outer row .occidentalis n. sp. 
A 2 . Normally with tegmina and wings hardly ever shorter than ab¬ 
domen. Hind tibiae ten or eleven-spined in outer row. 
B l . Smaller, the tegmina and wings about equalling the abdo¬ 
men in length even in <p. Fastigium slightly acute-angled in 
male.... deorum Scudd. 
B 2 . Larger, the tegmina and wings slightly surpassing tip of the 
abdomen in Fastigium right angled or even more obtuse in 
male as well as in female. scudderi Bruner. 
Encoptolophus csioradsnsis new species. 
Somewhat resembling E. sordidus in general form but differing from 
it in a number of respects. The chief of these variations are a lower 
median carina of the pronotum in which the two sections are about equal 
in height, glaucous instead of fuliginous hind tibiae, and a prevailingly 
pale grayish testaceous color with decided dark markings on tegmina, 
hind femora and posterior half of pronotal disc. 
Head unusually large and gross, quite distinctly broader than the 
front edge of the pronotum and higher than the general depth of the 
body;the vertex between the eyes about as wide as the shortest diameter 
of the latter, the scutellum broadly pyriform,rather shallow and provided 
in its posterior half with a well defined longitudinal carina which is 
continuous over the occiput to the front edge of the pronotum; lateral 
foveolse small, triangular, scarcely sulcate; frontal costa rather promi¬ 
nent, the sides evenly diverging downwards, quite deeply sulcate in the 
vicinity of the ocellus, the bounding walls heavy; antennae about reach- 
