338 REPORT OF STATE GEOLOGIST. 



XIX. Djcromorpiia Morse (ISOG). 



Vertex much shorter than hroad; the hiteral earinffi distinct, ele- 

 vated, and meeting in front in a blunt point; median carina and 

 lateral foveolse wholly wanting. Antennae about the length of the 

 head and pronotum together, the joints moderately flattened. Disk 

 of the pronotum fiat, the carinas distinct, straight and parallel, all 

 cut behind the middle by the principal sulcus. Lateral lobes of the 

 pronotum perpendicular, longer than deep, the front and hind mar- 

 gins strongly oblique; the latter plainly sinuate; the lower margin 

 more strongly sinuate. Tegmina usually more or less aborted, rarely 

 reaching the end of abdomen. Hind femora stout and not banded. 

 Two species are known from the United States, one of which occurs 

 in Indiana, 



31. DicROMORPHA viRiDis (Scudfler). The Short-winged cireen Locust. 

 Chkmlti.s viridis Scudd., 14 1, VII, 18(52, 455; Glov., 62, 1872, Plate 



VI, Fig 11; Plate X, Fig.:5; Thorn., 2 11, IX, 1880, 92, 99; 



Fern., 5 3, 1888, 36; McN., 8 8, ^^, 1891, 64; Beut., 3, VI, 



1894, 292, Plate VII, Fig. 10. 

 Chrysochraon viridh Tliom., 206, V, 1873, In; Bl., 4, XXIQ, 1891, 75; 



Id., 11, XXVI, 1894, 221. 

 Dk-romorpha rrridis Morse 98, VII, 1896, 826, 3SB, Plate 7, Figs. 7, 



7a; McN., 89, VI, 1897, 281; Liigg., 84, 1898, 124, Fig. 71; 



Bl., 16, 1899, 241, Fig. 67; Scudd., 188, 1900, 25. 

 Chlcealtis jiunctulata Scudd., 14 1, VII, 1862, 455; Fern., 53, 1888, 36. 

 Chrysochraon punctulnta Thorn., 206, V, 1873, 76. 

 Opsomala hrevipennis Thorn., 202, V, 1S65, 451. 

 Truxalis angu.'<ticornis Stal., 200, I, 1878, 105. 



Color of male dull brown, the top of head, di.^k of pronotum and 

 dorsal field of tegmina usually bright green, rarely brown; face pale 

 yellowish brown. Female, either bright green or dirty brown; often 

 with a narrow dark line beginning behind the eye and running along 

 the upper portion of lateral lobe of pronotum. Tegmina ovate 

 lanceolate, about half the length of abdomen in the female, three- 

 fourths its length in the male. Ilind femora reaching tip of abdo- 

 men in the female, exceeding abdomen one-third their length in male. 

 Very rarely the tegmina reach to or beyond iho tip of abdomen; this 

 form having been described as punctulala. 



Measurements: Length of body, male, Ki mm., female 27; of au- 

 tennte, male and female. S.T) mm.: of pronotum, male, -4 mm., female, 

 6 mm.; of tegmina, male. S..") mm., female, mm.; of hind femora, 

 male, 11.5 mm., female, 15 mm. 



