1878.] 85 [Seudder. 
middle, a continuation of the black-bordered yellowish stripe on the 
metathoracic epipleura; occasionally the band is wholly obsolete on 
the posterior lobe; in the middle of the portion of the band on the 
anterior lobe is also a roundish or oblique pyriform yellowish spot. 
Hind femora apparently yellowish, the incisures infuscated, with 
rather faint traces of a pair of broad, dusky bars above ; hind tibize 
perhaps reddish in life, with black spines lighter colored at base. 
Length of body, 7, 17.5 mm., ?, 21 mm.; of antenne, 7, 10.5 mm., 
?, 8.5 mm.; of tegmina, ¢, 4 mm., 2, 4.5 mm.; of hind femora, 
oo) 12.5 mm., 2, -138 mm: 1 ¢, 4 ¢. Arizona and San Carlos 
(Ariz.?), Lt. Wheeler’s explorations; Ft. Whipple, Ariz., and Ft. 
Buchanan, Southern Arizona, Dr. E. Palmer. 
Mr. Thomas, judging from the types he has kindly sent me, has 
confounded two species in the insect he has described as Pezotettix 
Humphreysi, the 3 and one of the 2 ? belonging to the species above 
described, the other females to another, which apparently were prin- 
cipally used in his description, for he describes the tegmina as “ mere 
figments on the sides... spatulate.” I have accordingly restricted 
P. Humphreysi to the larger species, with tegmina more than twice 
as long as broad, very oblong oval, enlarging from the base outward, 
the inner (upper) edge nearly straight, the costal edge convex, the 
apex broadly rounded, and the tip neither produced nor excised; 
the veins of the tegmina are also less frequent than in P. aridus. I 
I have a specimen of the latter species collected by Xantus, perhaps 
at Cape St. Lucas, Lower California. Pez. aridus is somewhat 
nearly related to Pez. pupeformis Scudd. 
90. Pezotettix aspirans. Vertex between the eyes con- 
siderably broader than the first antennal joint, rather broader in the 
? than in the ¢; foveola shallowly sulcate, subequal, the bounding 
walls low and coarse ; frontal ridge subequal, expanding at the base, 
very slightly suleate above, more sulcate, but not deeply, below the 
ocellus. Pronotum very short and stout, simple, expanding a little 
on the posterior lobe; anterior and posterior lobes of equal length ; 
front margin straight, hind margin gently angulated, more prom- 
inently in the ? than in the ¢; median carina distinct but dull and 
equal on the posterior lobe, absent from the anterior lobe ; transverse 
sulci of the anterior lobe unusually distinct, continuous; lateral 
carine distinct but rounder; disc punctate, distantly and rather 
faintly on the anterior lobe, abundantly and rather coarsely, but still 
faintly, on the posterior lobe. ‘Tegmina short subfusiform, scarcely 
