308 REPORT OF STATE GEOLOGIST. 



This olive brown, short-winged locust probably occurs throughout 

 the southern two-thirds of the State, but has been taken only in 

 Crawford, Washington, Monroe, Franklin, Wells, Marion and Vigo 

 counties. In central Indiana it reaches maturity about September 

 1st, and frequents, for the most part, high, dry, open woods, espe- 

 cially those in which beech and oak trees predominate. On the tops 

 of the hills, in the coal district of Vigo County, where the soil is a 

 cla}^, and the herbaceous vegetation somewhat limited, it is the pre- 

 vailing, and often only, representative of the family. In late Octo- 

 ber, if the season is dry, it is often found in company with Dicro- 

 morpha viridis and Truxalis hrevicornis among the reeds and tall rank 

 grasses near the borders of marshes, and as late as November 22d, 

 has been noted enjoying the afternoon sunshine from a perch on the 

 bottom plank or rail of a fence. The females are always much more 

 numerous than the males, the ratio being about eight to one. Their 

 larger, robust form renders them more clumsy, and hence more 

 readily caught by the hand, the males being active leapers, and re- 

 quiring quick movement on the part of the collector to effect their 

 capture. The range of the species is given by Scudder as "Indiana 

 to Arkansas and Texas." 



63. Melanoplus ghacilis (Brunei). The Graceful Locust. 



Pezoiettix (jradllif Brun., 20, \TII, 1876, 124; Scudd., 165, XU, 1880, 



76; BL, 4 XXIH, 1891, 81; Id., 1 1, XXVI, 1894, 22,3. 

 Melanoplus gracilis Scudd., 179, XXXVI, 1897, 16, 35; Id., 18 1, 1897, 



130, 327, Plate 22, Fig. 3; Id., 188, 1900, 69; Lugg., 84, 1898, 



188. 

 PezoteUir minutiijcnnis Thorn., 209, I, 1876, 66; Id., 2 I 1 , IX, 1880 



90, 119. 



Size below the medium. Vertex not swollen nor elevated above 

 the pronotum; the interspace between the eyes very narrow, about 

 equaling the width of first antennal joint (male) or nearly twice as 

 broad (female); the front half strongly sloping downward and nar- 

 rowly but distinctly sulcate (male) or broadly and shallowly sulcate 

 (female). Frontal costa prominent, sliglitly wider than the inter- 

 space between the eyes; feebly or not at all sulcate. Antennae about 

 three-fourths the length of hind femora. Pronotum, sub-cylindrical, 

 faintly expanding on posterior half; the disk with the sides sloping; 

 the median carina low but distinct and equal throughout; front mar- 

 gin truncate, hind margin broadly rounded, with a median shallow 

 notch; prozona twice the length of metazona. Tegmina about the 

 length of the prozona, narrowly oblong, their inner edges widely 

 separated. Hind femora very slender. Extremity of male abdomen 



