OETHOPTEEA OF INDIANA. 231 



Color, grayish, light brown or fuscous above; the sides blackish, 

 the tip of pronotum with a small white spot; the male with the lower 

 part of fac'e, mouth parts, and the lower sides of pronotum in front 

 of legs, ivory white; the female with the last two joints of palpi, and 

 often a spot on the upper outer half of hind femora, white. Body 

 robust; vertex about twice the width of one of the eyes, projecting 

 rather strongly in front of eyes. Frontal costa straight, the upper 

 half, when viewed from the side, prominent; the lower half sloping 

 gradually. Antennae slightly flattened, the joints of the middle third 

 not over two and a half times as long as broad. Pronotum with its 

 front dorsal margin terminating in an obtuse angle which reaches 

 opposite the posterior third of eyes; its dorsal surface rugose with 

 distinct, branching vein-like wrinkles; its median carina distinct, but 

 little elevated; its posterior portion slightly surpassing the tip of 

 abdomen; or, in the long form, 2\ parvipennis pennata, passing the 

 tip of hind femora. Inner wings either aborted or in the form 

 pennata equaling or slightly exceeding the pronotum in length. 



Measurements: Long form, length of body, male, 12.5 mm., fe- 

 male, 15 mm.; of pronotum, male, 10.5 mm., female, 14 mm.; of 

 hind femora, male, 5.7 mm., female, 7.2 mm. Short form, length of 

 body, male, 9.5 mm., female, 13 mm.; of pronotum, male, 8.5 mm., 

 female, 12.5 mm.; of hind femora, male, 5.4 mm., female, 7 mm. 



This is a very common grouse locust throughout Indiana, fre- 

 quenting both dry upland woods, fence rows, and low marshy tracts. 

 Its mating season appears to be the whole year round, as I have taken 

 specimens in copulation in nearly every month, even on sunny days 

 in mid-winter. It hibernates usually in small colonies or groups — 

 as many as eleven having been found huddled together within the 

 space of a few square inches on the under side of a log or chunk. 

 E. M. Walker has found it hibernating in a beetle-boring in a log, 

 the hole being completely hidden by the bark. The general color of 

 the pronotum varies greatly in different examples, each insect seem- 

 ingly seeking that local habitat which corresponds closely to its hue. 



28. Tettigidea lateralis (Say). 



Acrydium latemle Say, 13 7, I, 1821, 10, Plate 5; Id., 139, I, 1859, 



10, Plate 5. 

 Tettigidea lateralis Scudd., 14 1, VII, 1862, 477 (in part); Id., 188, 

 1900, 18; Thos., 206, V, 1873, 187 (in part); Bl., 4, XXHI, 

 1891, 100 (in part); Id., 16, 1899, 236, Fig. 62; Hanc, 66, 

 XX\Tn, 1894, 483, Plate XIH; Id., 69, 1902, 149, Plate X, Fig. 

 9; Morse, 96, IH, 1895, 108; Lugg., 84, 1898, IH, Fig. 66 (in 

 part). 



