ORTHOPTERA OF INDIANA. 275 



The range of D. Carolina is a most extensive one^, embracing the 

 United States and Canada from ocean to ocean. 



XXXI. Spharagemon Scudder (1875). 



Body slender, more or less compressed. Head rather swollen 

 above, the vertex shaped much as in Dissosteira, but the lateral 

 carina converging more rapidly; the median carina and angled front 

 margin absent, the foveolse wider and more distinct. Frontal costa 

 narrow, sulcate, at least below the ocellus. Antennae in both sexes 

 about as long as hind femora; filiform, the joints of basal third a 

 little flattened. Pronotum with the disk of metazona flat, that of 

 prozona with the sides sloping; the median carina high and strongly 

 compressed, cut a little in front of the middle by a deep but narrow 

 notch; the lateral lobes as in Dissosteira. Tegmina relatively shorter 

 than in Dissosteira, the intercalary vein less distinct and nearer the 

 median than the ulnar vein. Inner wings yellow, with a dark curved 

 median band. Hind femora rather stout and short, equaling, or a 

 little exceeding, the tip of abdomen. Hind tibise, in our species, 

 with at least the apical half red. Valves of ovipositor short; but 

 little exserted. 



This genus is closely related to Dissosteira, and Saussure, in his 

 Prodromus, has placed it as a sub-genus under that one. Eight 

 species are known from the United States. Of these, two have been 

 taken in Indiana. 



KEY TO INDIANA SPECIES OF SPHARAGEMON. 



a. Size, large; the notch of median carina of pronotum vertical. Hind 

 tibiae with a distinct pale ring on basal third, followed by a black 



one of equal width, the apical half coral red 48 bolli, p. 275 



aa. Size, small; notch of median carina of pronotum distinctly oblique. 

 Hind tibi.ne coral red, sometimes paler at base, but without distinct 

 white and blaclv rings ,. . . .49 wyom'mqkinum, p. 277 



48. Spharagemon bolli Scudder. Boll's Locust. 



Spharagemon holU^cviAA., 1 49, XVII, 1875, 469; Id., 15 3, IV, 1875, 

 68; Id., 168, XXIH, 1893, 77; Id., 188, 1900, 37; McN., 88, 

 VI, 1891, 64; BL, 6, XXIV, 1892, 30; Morse, 95, XXVI, 1894, 

 227, 236, Figs. 6, 7; Id., 97, VH, 1895, 290; Id., 99, VIH, 

 1897, 37, 88, Plate 2, Fig. 26; Beut., 3, VI. 1894, 300, Plate X, 

 Fig. 1; Lugg., 84, 1898, 163, Fig. 98. 



Dissosteira (SpJiaragemon) bolH Qauss., 134, 1884, 140. 



Dissosteira bolli Fern., 53, 1888, 43. 



Spharagemon balteatimi Scndd., 149, XVII, 1875, 469; Id., 153, IV', 

 1875, 68; Bl., 4, XXIU, 1891, 78. 



