396 FAMILY Vf. ACRIDIDJ3. THE LOCUSTS. 



Specimens at baud are from Denmark and Yemassee, S. Car., 

 August 10 Sept. 4. Its known range is given by R. & H. (1916, 

 229) as extending "from Sulphur Springs, N. Car., Pinnacle Peak 

 and Blue Ridge, (la., south and east as far as Warm Springs and 

 Macon, Ga., and Yemassee, S. Car.'' It is sylvan in habitat, occur- 

 ring on the ground among the undergrowth of pine and oak woods. 



184a. MELANOPLUS CARNEGIEI ACIDOCERCUS Hebard, 1919a, 290. 



Very close to carnegiei, the males agreeing absolutely in color, size 

 and measurements, differing only in the form of cerci and less developed 

 furcula as described in key, and in having the median sulcus of supra- 

 anal plate percurrent and subgenital plate a little wider, less conical, its 

 extreme apex feebly thickened to form a small tubercle. Females slightly 

 paler with sides of pronotum a little less divergent; tegmina slightly 

 longer, their edges feebly overlapping. 



This locust was taken by R. & H. in some numbers Sept. 5, 6, 

 at Bainbridge, Oa. An examination of the type series at Phila- 

 delphia showed that the male cerci and furcula were both variable 

 in form and development, the slender apical portion of cerci in 

 some individuals being much shorter than in others, while the 

 furcula occasionally had very short projections from the swollen 

 bases, thus approaching those of carnegiei. I therefore regard 

 (iciilorerciix as only an offshoot or incipient species as yet worthy 

 only of a trinomial name. 



"The species was found common in oak shoots in areas of sandy 

 soil overgrown with oaks, and occasional among the scant grasses 

 and plants growing on sandy soil, in the higher areas of the long- 

 leaf pine woods." (Helta ><!.') 



185. MELAXOPLUS DAVISI (Hebard), 1918, 153. Davis's Oak Locust. 



Size large for the group, the female especially so. General color pale 

 brown to dull clay-yellow, the usual broad postocular black stripe, narrower 

 in female, extending back to metazona; lower part of lateral lobes clay- 

 yellow; face russet to yellowish. Tegmina pale brown, male; dull clay- 

 yellow above, slightly darker on sides, female. Under surface dull yellow. 

 Outer face of hind femora reddish-yellow with a paler ring near knee, 

 upper face buffy with two broad brown cross-bars, these often absent in 

 female; hind tibiae coral-red, the spines black. Interocular space about as 

 wide as basal joint of antennae, male, four-fifths the width of frontal costa, 

 female. Fastigium moderately produced and shallowly concave. Frontal 

 costa broad, sulcate only in the region of the ocellus. Pronotum with me- 

 dian carina moderately high; hind margin broadly obtuse-angulate or sub- 

 rounded. Tegmina broadly oval, usually slightly overlapping, as long as 

 prozona and half the metazona. Prosternal spine short, subconical, its 

 apex blunt, rounded. Furcula consisting of two nearly attingent slight 

 convexities from each of which projects beyond the segment a minute 

 rounded appendage. Supra-anal plate moderately broad, shield-shape, its 



