306 REPORT OF STATE GEOLOGIST. 



5 nun., i'einalo, mni.; of tegmina, male and female, 6 mm.; of hind 

 femora, male, 9.5 mm., female, 12 mm. 



This handsome, short-winged form seems to he raihor limited in 

 distribution, having been noted only at two or three points in Illi- 

 nois and in Posey, Monroe, Vigo, Marion and Lake counties, Indiana. 

 With us, it is the first locust to reach maturity from eggs hatched in 

 spring, a mature male having been taken in Vigo County on May 

 11th, and a number of both sexes in Posey County on May 12th. 

 By June 1st it is common localW, and by August 1st has mostly 

 disappeared. It frequents rather low, flat woods and clearings, being 

 found about the margins of burned or bare places. 



On June 3, 1900, I happened upon a large colony of viridipes in 

 the upland woods just west of the Stat^ Fair Grounds, in Marion 

 County. They were in an open, rather bare tract near the center 

 of the woods, which was surrounded by beech and black maple trees. 

 I took with the fingers, 40 of them in 20 minutes, and could have 

 secured as many more. The males, when first disturbed, would leap 

 two or three feet, almost perpendicularly, for several times in rapid 

 succession, then give one or two sidewise leaps, and if still pursued, 

 endeavor to hide the head beneath a dead leaf. The females were 

 more clumsy, and after giving one or two short leaps would squat 

 close to the ground, when they were readily taken. One pair were 

 mating and a number were yet in the nymph stage. On June 1, 1902, 

 I found the species abundant in the same place. In Lake County it 

 was taken in a similar woods just back of the hotel on the west side 

 of Cedar Lake. McNeill says that in Illinois "it shows a decided 

 preference for open grassy ravines." It probably occurs in suitable 

 localities over the greater portion of Indiana. 



02. Melanoplus obovatipennis (Blatchley). The Obovate-wiuged Lo- 

 cust. 



Pezotettix obonttipnmi^i BL, 11, XX^^, 1S94, 241. 



Melanoplus obovatipcnnh Scudd., 1 79, XXXVI, 1S97, 14, 34; Id., 18 1, 

 1897, 129, 264, Plate 17, Fig. 10; Id., 188, 19a), 61; BL, 15, 

 XXX, 1898, 62. 



Pezotetth- rotiindipcnnis BL, 4, XXDI, 1891, SO (uec. Scudder). 



Male below the medium in size; female much larger and more ro- 

 bust. Head prominent, the occiput and vertex elevated a little 

 above the pronotum. tlic interspace between the eyes nearly twice 

 (male) or more than twice (female) the breadth of basal joint of 

 antenna}; the front half .strongly sloping downward, narrowly and 

 shallowly sulcate in tlie mate l)roadly depressed with distinct raised 

 margins in the female. Frontal costa about the width of the inter- 



