NORTH AMERICAN ACRIDIIDJE. 49 



long as pronotum. Male abdomen subclavate, considerably upturned. 

 Subgenital plate with the sides much expanded basally, the ventral 

 face very short, convex, terminating in a very short, blunt, up- 

 wardly directed fuscous tubercle distinctly removed from the inner 

 margin. Supra-anal plate shield-shaped, with convex sides, abruptly 

 narrowed to terminate in an acute point with straight sides. Furcula 

 consisting of a pair of small, straight, flattened, backwardly directed, 

 rather distant processes, about as long as the last dorsal segment. 

 Cerci slender, three times as long as basal width, tapering in basal 

 third to about half the basal width, equal in middle fourth, expand- 

 ing a little distally into a laminate, obliquely excised tip, the upper 

 angle rounded, the lower acutely pointed, the whole organ gently 

 incurved and the tip slightly decurved. 



"Color dark reddish brown above, white and flavescent be-- 

 neath. Post-ocular stripe continued into fuscous of sides of abdo- 

 men, sometimes suffusing the metepisternal pale fascia. Hind 

 femora with fuscous genicular lobes and indications of oblique fascia. 

 Hind tibiae fuscescent glaucous with black spines. 



"Length of body: male, 18.5-19; female, 26; hind femora: 

 male, 10.5; female, 12.5; antenna: male, 10.5; female, 8; tegmina; 

 male, 3.5-4.3; female, 4.5 mm." 



(See Fig. 7, p. 46 drawing of male cercus.) 

 Georgia : Jasper, July 26, 2600 feet, summit of Sharptop Mountain. 



Transition zone. Sylvan ; in highland forests. 

 Melanoplus devius Morse. 



Melanoplus devius. Psyche, XI, 12 (1904). 



" This species is nearly related to tribulus here described, agree- 

 ing with it in size, form, and shape of subgenital plate. Mid- 

 carina of pronotum percurrent. Prosternal spine typically cylindro- 

 conic and rather bluntly pointed. Furcula small and very variable. 

 Supra-anal plate usually distinctly ampliate basally. Cerci nar- 

 row from a broad base, two and a half times as long as basal 

 breadth, tapering gently in both breadth and thickness in basal 

 half, the distal half equal or a little expanded apically, laminate, 

 transversely excised at apex, the upper angle more rounded than 

 the lower, the dorsal margin sinuous, the ventral concave. The 

 fuscous markings of the end of the abdomen of the male readily dis- 

 tinguish it from tribulus ; in this species the posterior face of the 

 apical tubercle and the sides of the subgenital plate, the sides and 

 anterior and posterior margins of the preceding sternite, are infus- 

 cated. In the female the sides of the abdomen are nearly free from 

 fuscous markings. Hind tibiae glaucous with black spines. 



