Scudder. ] 86 [November 6, 
longer than the pronotum, about twice as long as broad, the extremity 
produced but rounded, the inner edges not overlapping each other. 
Last ventral segment of the ¢ abdomen sharply upturned and tumid, 
short-conical, several times broader than high, the extremity just 
below the entire apical edge produced to a blunt point ; supraanal 
plate triangular, perhaps a little longer than broad, the sides straight, 
the tip rounded, the surface subgibbose ; marginal apophyses of the 
preceding seement forming minute, triangular, blunt, rather distant 
teeth ; anal cerci simple, regularly conical, compressed at base, blunt 
tipped, considerably shorter than the supraanal plate. 
The general color is blackish griseous, very obscurely mottled with 
testaceous above, dirty yellow, tinged with ferruginous below; antennz 
pale red at base, much infuscated beyond ; a quadrate piceous patch 
occupies the upper part of the anterior section of the deflected lobes, 
followed immediately below by a paler tint, and occasionally edged on 
the lateral carina with dull testaceous. Tegmina with some of the 
veins of the dorsal field (for the anterior field is deflected) tes- 
taceous. Hind femora testaceous, conspicuously marked with black 
at base and tip, and by two moderately broad transverse bands, the 
one just before the middle V-shaped; hind tibiew pale red, marked 
with black toward the base, the spines black. 
Length of body, ¢,13 mm, ?, 22 mm.; of antenne, ¢,4.5 mm., 
?, 6.25 mm. ; of tegmina, 3, 4.75 mm., ?, 5.75 mm. ; of hind femora, 
3, 8.25mm., 2,10 mm. 1¢,4 2. I took this species above timber 
on Pike’s Peak, at an elevation of 12-13,000 ft., on Aug. 24. Mr. 
Morrison has also sent it to me from Colorado, marked as coming 
from an elevation of 13,000 ft. 
This insect is interesting from its close relation to Pezotettiz alpinus 
var. montanus of Europe. It also bears a close general resemblance, 
but is not so closely allied, to Pez. Marshallii Them., from high eleya- 
tions in Southern Colorado. This latter species, as I have lately 
ascertained by examination of the type, courteously sent me by Mr. 
Thomas, is not the species I described under that name, doubtfully, 
in the Report of the Chief of Engineers for 1876, pp. 502-03. The 
species there described may receive the name of Pez. altitudinum. 
