263 REPORT OF STATE GEOLOGIST. 



flat, not rugose, the front margin truncate, the hind margin obtuse 

 angle^, the median carina low, of equal height throughout, cut with 

 a small notch a little in front of the middle; the lateral carinas dis- 

 tinct on both prozona and metazona. Ijateral lobes of pronotum, 

 deeper than long, the front margin nearly vertical, the hind margin 

 oblique, the lower margin as in Encoploloplius. Tegmina narrow, 

 surpassing the abdomen; the apical third remotely reticulate, the cells 

 quadrate. Inner wings pellucid with dusky venules. Hind femora 

 equaling or slightly exceeding the abdomen; their upper margin sharp 

 and somewhat crested. Valves of ovipositor strongly exserted. One 

 species is found throughout the northernmost United States and 

 Canada from the Atlantic to the Pacific. It occurs rarely in northern 

 Indiana. 



42. Oamnula. pellucida (Seudder). Tlie Clear-winged Locust. 



CEdipoda pellucida Scudd., 14 1, VII, 1862, 472; Glov., 60, 1870, 78; 

 Id., 62, 1872, Plate XII, Fig. 20; Thorn., 206, V, 1873, 137. 



Cktmnula pellucida Scudd., 14 8, I, 1874, 378; Id., 188, 1900, 32; 

 Thorn., 2 1 1, IX, 1880, 118; Id., 2 15, U, 1880, 242, Fig. 10; 

 Riley, 127, XXV, 1891, 32, Fig. 10; Sauss., 134, 1884, 81; 

 Feru, 5 3, 1888, 41, Fig. 17; Bruu., 2 6, XX^^I, 1892, 12; Id., 

 2 8, XXVIII, 1893, 34, Fig. 18; Id., 30, 1893, 463, Fig. 107; Id., 

 34, 1896, 123, Figs. 25, 26; Morse, YUL, 99, 1897, 35,80, Plate 

 2, Fig. 20; Lugg., 84, 1898, 148, Figs. 87, 88. 



(Ediimda atrox Scudd., 147, 1872, 263; Glov., 60, 1871, 77, Fig. 

 10; Id., 62, 1872, Plate VHI, Fig. 3; Id., 63, 1874, 137, Fig. 10; 

 Thorn., 206, V, 1873, 136; Riley, 2 14,1, 1878, 454, Fig. 109. 



General color, light brown; face, reddish brown. Antennse yellow- 

 ish at base, the apical half dusky. A dark triangular spot behind eye, 

 and an oblong vertical black spot on the front half of lateral lobe 

 of pronotum. Tegmina smoky brown, with several darker rounded 

 spots on sides; these separated by lighter yellowish blotches; the 

 dorsal surface dark brown, with a yellowish brown stripe along each 

 humeral angle. Inner wings transparent, with dark nervulcs. Hind 

 femora yellowish brown, with two or three blackish bars on the outer, 

 face; the knees fuscous. Hind tibiae yellowish brown; the basal fourth 

 lighter. Abdomen yellowish beneath, the sides darker. 



"In the markings of the tegmina, form and color, pellucida looks 

 like a diminutive Hippisciis. It varies much in size and tegminal 

 markings." 



Measurements: Length of body, male, 19 mm., female, 22 mm.; of 

 antennas, male and female, 7 mm.; of tegmina, male, 17 mm., female, 

 20 mm.; of hind femora, male, 12 mm., female, 13 mm. 



