SUBFAMILY IV. CONOCEPHALIN^E. 549 



tion shows that while the Indiana males are somewhat smaller 

 than the measurements given, they agree otherwise so closely that 

 there is little doubt but that they represent the northern form of 

 that species, hitherto known only from Louisiana and eastern 

 Texas. R. & H. state that in Texas it was "found frequenting 

 high grasses along streams or in depressions. The note \v:is a long- 

 buzzing zeecccce somewhat resembling that of some cicadas, with 

 but few interspersed clicking sounds." 

 251. ORCHELIMUM NIGRIPES Scudder, 1875, 459. Black-legged Meadow 



Grasshopper. 



Size medium for the genus; form robust. General color green or red- 

 dish-brown, the former prevailing in male, the latter in female; occiput 

 and disk of pronotum with the usual brown markings; front and sides 

 of head, and fore and middle femora, reddish-yellow; antennae and all the 

 tibia? and tarsi, together with apical third of hind femora, black or dark 

 brown at least above; in one specimen at hand the whole body, except teg- 

 mina and femora, black. Fastigium narrow, its sides subparallel, and apex 

 very feebly if at all widened. Pronotum short, distinctly saddle-shaped in 

 male where the metazona is rather strongly upturned ; lateral lobes dis- 

 tinctly deeper than long, their lower margin very oblique, its hind angle 

 narrowly rounded; convex callosity narrow but distinct. Tegmina equall- 

 ing the wings, male, a little shorter, female. Shrilling organ of male un- 

 usually large and prominent with strong crossveins; behind it the tegmina 

 taper rapidly on both margins, their shape and the size of the tympanum 

 causing the male to appear somewhat peculiar and more robust than it 

 really is. Hind femora armed on apical half of lower outer carina with 

 one to four small spines. Cerci of male slender, tapering, concave within, 

 its apex obtuse. Ovipositor strongly curved, broadest at middle, tapering 

 to a delicate point (Figs. 179, 180, f.) Length of body, $, 1820, 9, 19 

 21; of antennae, 66 80; of pronotum, $ and 9, 4.3 5; of tegmina, $, 

 2022, 9, 2225; of hind femora, $, 1617, 9, 1719; of ovipositor, 9 

 10.5 mm. 



Next to 0. vulgare this handsome black-legged grasshopper is 

 the most common Conocephalid in Indiana, occurring by hundreds 

 about the margins of every lake, pond and marsh in the State. It 

 is essentially a lowland or hygrophilous species and is seldom 

 found about the drier uplands where rulf/are has its favorite 

 haunts. It reaches maturity about July 20, and frequents the tall 

 grasses and especially the stems and leaves of the different species 

 of smartweed, Polygon u in, growing in the shallow water of the 

 larger ponds and lakes. Near Lafayette Fox (1915) found it "an 

 abundant and characteristic species of open grassy bogs and damp 

 situations generally, being especially common in the rice cut- 

 grass, Homalocenchrus orysoidcs (L.)." Examples of the parasi- 

 tic hairworm, Gordius sp. f, have been taken from the abdomens of 

 a number of specimens. 



