340 FAMILY VI. ACRIDID.E. THE LOCUSTS. 



dorsal surface much longer, their outer margins finely dentate, strongly 

 sinuate. Length of body, $ , 20, $,25; of pronotum, $, 4.8, 9, 5; of teg- 

 mina, $, 3.5, $,4; of hind femora, $ , 11, $,12 mm. 



The above, the first description of the male, is drawn from an 

 unique taken by Davis, July 2, 1919, along the Catamount Trail, 

 at an elevation of about 2,500 feet, near White Sulphur Springs, 

 W. Va. The female described is in the U. S. National Museum col- 

 lection and was taken by Fox, at a height of 4,000 feet on Sound- 

 ing Knob, near Monterey, Va. It was found "on stony ground in 

 the shrubby undergrowth of low open woods on the mountain 

 side." Morse's unique type was a female taken on Chea\vha Moun- 

 tain, Ala., July 13, at a height of 2,300 feet, while sweeping grass 

 and shrubbery in the vicinity of Pulpit Rock, near the extreme 

 summit of the mountain. The three specimens mentioned and 

 two males in the Philadelphia collections, taken by R, & H. near 

 Bald Knob, Bath Co., Va., are all the individuals known of this 

 handsome tree locust. It appears to be a subalpine, forest-loving 

 species, ranging from Virginia to Alabama. Morse first described 

 it (loc. fit.) as Podisma scmlderi, then (Psyche. 1907, 57) changed 

 the name to P. australis, as the name scudderi had been previous- 

 ly used in Podisma. It has since been found to belong to the 

 genus Dcndrotettisp, and the original specific name is therefore 

 restored. 



VI. PODISMA Latreille, 1829, 188. (Or., "measuring by feet.") 



Medium or small, subcylindrical species, having the head little 

 if any longer and but slightly wider than prozona ; antenn.p rare- 

 ly longer than hind femora; fastigium not strongly widened, but 

 feebly declivent in front of eyes; face subvertical ; frontal costa 

 low, not broader, usually much narrower, than the interocular 

 area ; eyes rather large, rarely prominent ; prozona longer than 

 metazona, sometimes twice as long, smooth or nearly so ; median 

 carina low, sometimes obsolete on prozona ; lateral carince usually 

 wanting; lateral lobes vertical, as long as deep, their lower margin 

 sinuous, its hind angle broadly rounded; tegmina normally ab- 

 breviate, often wanting; prosternal spine short, stout, its tip 

 bluntly rounded ; interspace between the mesosternal lobes of male 

 as wide as the lobes themselves, of female nearly twice as wide as 

 long; abdomen compressed, carinate, female, subcylindrical with 

 apex upcurved, male; subgenital plate of male with a distinct tu- 

 bercle below the upper margin; cerci and furcula variable in the 

 different species; valves of ovipositor narrow, strongly exsertcd. 

 Kirby (1910, 533) accredits to this genus 31 species, 12 from 



