176 



straight. Pectus punctured. Abdomen of the male somewhat elongate; cerci 

 very broad and flat, very slightly and obtusely notched at the apex, which is 

 bent upward and over the last segment ; sub-anal plate elongate, turned 

 upward, with a deep, square notch at the apex. 



Color. — Dark-green. Ocelli bright, transparent-amber ; eyes brown ; 

 cheeks yellowish, with a dark-green stripe extending downward from the 

 eyes. The pronotum has some pale spots on the sides, and sometimes the 

 posterior lobe is tinged with brown. Elytra uniform green, semi-transparent 

 toward the apex, and sometimes faintly tinged with brown. Wings hyaline ; 

 nerves and nervules dark-brown. Posterior femora greenish above and 

 below ; pinnee of the disk alternately white and green, the white occupying 

 the flat interspaces ; inner face greenish-yellow. Posterior tibiae bright- 

 vermilion, the under surface being striped with yellow ; spines yellow at 

 the base, tipped with black. Venter and pectus dark-green, sometimes varied 

 with dark-brown. 



Dimensions,- — 9 Length, 2 to 2.5 inches; elytra, 1.7 to 2 inches; poste- 

 rior femora, 1.25 inches; posterior tibiae, 1.2 inches. $ Length, 1.6 to 1.75 

 inches. 



Arizona (Thomas). 



This fine, large species in some I'esjiects is closely allied to A. ohscurum.. 

 Barm., in others to A. emarginatum, Uhler, but appears to be distinct. It 

 differs from both in wanting the stripe on the pronotum and the dark dots 

 or strijjes on the hind femora. 



TROPIDACRIS, 8cu(Ifl. 



Species very large. Head large, compressed ; space between the eyes 

 equal to the shorter diameter of the eye ; median frontal ridge broader than 

 the length of the first joint of the antennae ; the breadth of the labrum is 

 equal to the distance from the upper edge of the clypeus to the upper limit 

 of the frontal costa ; the lateral carinas of the front are distinct, divergent. 

 Pronotum tapers moderately, anterior width to the posterior as 1 to 1.20 ; 

 posterior angle a right angle or less ; median carina cristate, more prominent 

 anteriorly than posteriorly, sometimes obsolete behind. Prosternal spine 

 rather slender, slightly compressed laterally, slightly curved backward. Elytra 

 fully five and one-half times longer than broad ; nervules prominent. Wings 

 long and broad, largely spotted with dusky colors. Abdomen comparatively 



