48 NORTH AMERICAN ACRIDIID^E. 



the abdomen (as well as in the form of the cerci) . In this species 

 the subgenital plate is shining black, the preceding sternite greenish 

 white with a very broad triangular fuscous spot extending across its 

 posterior margin below the upturned subgenital plate from which it 

 is separated by a lenticular pale space along the suture. In deceptus 

 and mridipes the anterior margins of several of the abdominal sterna 

 are conspicuously infuscated as well as both margins of the sternite 

 preceding the subgenital plate." 



(See Fig. 6, p. 46 drawing of male cercus.) 

 North Carolina : Murphy, July 25, 1800 feet. 



Upper Austral or Transition zone. Sylvan, in dry upland for- 

 ests of pine and oak on high ground. 



Melanoplos deceptos Morse. 



Melanoplus deceptus. Psyche, XI, 9 (1904). 



" Melanoplus mridipes in part. Scudder, Rev. Melanopli, p. 255. 



' ' Agreeing with mridipes in size, color, and markings, but dif- 

 fering in the form of the cerci ; in mridipes these organs taper some- 

 what regularly to the apex ; in this species more or less of their 

 distal third is distinctly broadened dorsally and obliquely excised at 

 the end, the apex being acute and ventral ; the ventral margin may 

 be convex, straight, or slightly sinuous, the dorsal margin is concave 

 in the mesial portion, sometimes strongly so. The whole organ 

 varies much in breadth in different specimens. 



" Owing to its strong resemblance to mridipes this species has 

 been confused with it by various authors and a specimen was included 

 with the types of that species. The original descriptions and 

 drawings, however, accurately delimit mridipes from this and the 

 succeeding species." 



(See Fig. 9, p. 46 drawing of male cercus.) 

 North Carolina : Balsam, Aug. 19, 5700 to 6100 feet, Jones Peak. 

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



Transition zone. Sylvan; in deciduous forests at high 

 elevations. 



Melanoplus tribulus Morse. 



Melanoplus tribulus. Psyche, XI, 11 (1904). 



"A short-winged species of medium size. Disk of pronotum 

 somewhat convex above, once and a half (female) or twice (male) 

 as long as wide, mid-carina percurrent, distinct, lateral carinse ob- 

 solete, hind margin a little convex, emarginate. Prosternal spine 

 prominent, conical, acutely pointed, in female somewhat flattened 

 antero-posteriorly. Tegmina broadly ovate, about three-fourths as 



