Grasshoppers of Kansas. 109 



Measurements in Millimeters. 



Body. Tegmin.i. Post, femora. 



Female 39.0-25.0 36.0-26.0 21.0-15.0 



Male 33.0-25.0 32.0-27.0 18.5-15.4 



(See fig. 63, page 77.) 



Psinidia Stal. 



This genus is very closely related to Mestobregma and Scirtetica and 

 is quite often found in the same locality with them; however, it is 

 easily distinguished from them by the constricted pronotum and the 

 very peculiar shape of the antennas. The antennae are unlike those of 

 any other species of the subfamily in the depressed, prismatic form of 

 the joints, appearing almost ensiform next the base. The general 

 coloration is quite varied, presenting all shades from pale dust color 

 to bright reddish brown, or even black. 



Psinidia fenestralis Stal. 



General size small; head prominent; eyes small, protruding; fastigium 

 trigonal, deeply sulcate; antennae of medium length, tapering toward 

 the tip, flattened; frontal costa sulcate, converging from the base up- 

 ward; pronotum strongly constricted, posteriorly rectangulate; pronotal 

 carina? sharp, intersected by two sulci; lateral lobes parallel, the lower 

 posterior corner with a tooth; general color varying from pale dust color 

 to bright reddish brown; tegmina brownish, usually slightly maculate; 

 wings with base red or yellow; posterior femora fasciate with fuscous 

 on the outside, on the inside black with two light stripes; posterior tibiae 

 purplish. 



This species has not yet been found very extensively in Kansas. It 

 usually chooses low sandy locations and is accompanied by species of 

 Arphia, Trimerotropis and Mestobregma. 



Measurements in Millimeters. 



Bod}'. Tegmiiid. Post, femora. 



Female 27.5-24.0 26.5-24.5 14.5-13.0 



Male 21.0-20.0 20.5-19.0 11.5-10.5 



(See fig. 64, page 78.) 



Derotomema Sc. 



General size very small ; head and thorax somewhat wrinkled ; scutel- 

 lum of the vertex with high bounding walls; cranium between the eyes 

 with transverse carina?; antennae filiform; pronotal carina? anteriorly 

 elevated, centrally bilobate, posteriorly low and intersected usually by 

 two sulcii; neck constricted; eyes very prominent. Wings usually with 

 ^asal coloring and fuscous arcuate band. Color quite variable, from 

 dirty gray to fuscous, often with spots. 



This genus is represented in Kansas by but one species. 



