1878.] vas) (Scudder. 
9.75 mm.; of tegmina, ¢, 20.5 mm., 9, 22 mm.; of hind femora, ¢, 
14mm.,?,15mm. 2 ¢,2 ?, taken at Mr. Lake’s camp at Morri- 
son, Col., Aug. 9. 
This species resembles M. Packardit Scudd. in general appearance 
but belongs to the group of M. femur-rubrum (Burm.) being closely 
allied to the last described species, from which it differs greatly in 
coloration. 
A CeNnTURY OF OrRTHOPTERA. DercapE IX. — Acripir (PEz0O- 
TETTIX). By SAMUEL H. ScupDER. 
81. Pezotettix variegatus. This species is so closely allied 
to the well-known P. pictus Thom. and therefore so distinct from all 
other American species of this group, that it is best described by 
comparison with that species. This is particularly the case, because 
it is known to me only by specimens which have lost their original 
colors by immersion in alcohol. Judging however by comparison 
with similar specimens of P. pictus it would appear that this new spe- 
cies differs from it in having a less vivid variegation, and less con- 
trasted coloration. No doubt when fresh specimens are examined, 
many distinctions in colorational features may be laid down. The 
most noticeable differences in other directions are: — the heavier punc- 
tuation of the posterior lobe of the pronotum in P. variegatus (which 
lobe is also slightly longer, being more produced posteriorly), the 
much more broadly oval tegmina (which are twice as long as broad in 
P. pictus and only once and a half times in P. variegatus, the length 
being the same in each), the rather stouter hind femora, the less 
pointed anal cerci, and the slightly larger development of the small 
marginal apophyses of the last dorsal segment of the ¢ abdomen. 
It is of the same size as P. pictus. 23,13 @. 
This species is interesting as occurring only on the western side of 
the continental divide, while P. pictus is confined to the eastern side. 
I think Mr. Thomas somewhere makes this latter statement, but I 
can only find the tabular reference in his Acridide of N. America, 
which states that it belongs to the southern Rocky Mt. region. It is 
common in Texas, I have taken it at Cucharas in Southern Colorado» 
but it did not occur in Garland, across the Sangre de Cristo Mts. I 
also took it on the eastern slope of the divide at the Argentine Pass 
at an elevation of 12,000 ft. or more; it is abundant on the plains all 
