IOWA ACADEMY OF SCIENCES. 71 



BB. Margins of vertex obtuse in botli sexes, male elytra 

 brownish-green, nervures fuscous; male, less than 

 4inm brunneus n. sp. 



P. viridis Uhl., this is a common species throughout the 

 northern half of theU. S. , west to Colorado. It has been found 

 abundantly in the mountains of Colorado, up to 10,000 feet. The 

 mountain specimens are somewhat larger and of a deeper 

 green than those from the plains. The males usually have 

 the clypeus and margins of the gense, tergum and venter except 

 the margins, and all the legs deep fuscous. With these, and 

 dark green females, occurred the following variety: 



Var. montanus n. var. , structurally as in the typical form, 

 slightly larger, pale, straw-yellow, pronotum and elytra nar- 

 rowly margined with white; an oblique stripe occupying the 

 basal half of the clavus, except the margin, a stripe just inside 

 the costal margin, obsolete at the base, broadening towards the 

 apex, and a stripe on the tergum on either side just inside the 

 margin, deep or fuscous black. 



Described from four females from the headwaters of the 

 Little Beaver — altitude, 9,500 feet. 



P. flavidus Sign., this is a slightly narrower species than 

 viridis and the male vertex is acutely angulate instead of round- 

 ing as in that species. It ranges from Florida to Texas, and 

 north to Kansas and southern Iowa, where it overlaps the range 

 of viridis. 



P. brunneus n. sp., smaller than either of the other species, 

 with a shorter head, margins of the vertex blunt and rounding in 

 both sexes. Pale green, with the elytral nervures brownish fuscous. 

 Length 9 6 mm., ^ 3.5-4 mm.; width 9 scarcely 2 mm., $ 1.25 mm. 



Female; vertex convex and slightly sloping, scarcely as long as 

 the pronotum, anterior margin obtusely rounding; front, convex 

 faintly ribbed, clypeus broadest at the apex; pronotum slightly 

 more than twice wider than long, posterior margin roundingly, or 

 slightly angularly, emarginate, an arcuated, impressed line across 

 the disc, behind which it is usually transversely striated. Elytra, 

 in brachypterous forms, covering about two-thirds of the abdomen. 

 The apical cells minute; macropterous, in which the apical cells are 

 long, wedge-shaped, and reach the apex of the last abdominal seg- 

 ment. 



Male; smaller, narrower, with a shorter and still more bluntly 

 rounding vertex; the elytra are always long, covering the abdomen. 



Color; female, pale green, the vertex and face shading to white, 

 elytral nervures, greenish fuscous, distinct; apical cells hyaline, 

 the nervures fuscous margined, ovipositor tipped with reddish 

 orange. Male, pale green, the posterior part of pronotum and the 



