390 REPORT OF STATE GEOLOGIST. 



108. Orchelimum gladiator Bruner. 



Orchelimum (jlmUator Brun., 2 5, XXIQ, 1891, 71; Bl., 7, 1893, 138; 

 Scudd., 188, 1900, 73; McNeill, 90, XXXn, 1900, 77, 81. 



In its general structure this species resembles the more robust 

 forms like 0. glaherrivium and 0. nigripes. It differs from these, 

 however, in having shorter legs and antennae, and in the shape of 

 the ovipositor. The posterior femora are rather slender and un- 

 armed beneath; the cone of the vertex is short and obtuse, with the 

 extreme tip shallowly sulcate: the inner wings are the same length 

 as the tegmina in the male, a little longer in the female, where they 

 do not quite reach the tip of the ovipositor. The latter organ is 

 broad, nearly straight and of more than ordinary length. Cerci of 

 male stout, the basal tooth long, tapering gradually to a sharp point, 

 lis apical third a little curved. 



Color: Pale transparent grass-green throughout, save the usual 

 markings upon the occiput and disk of pronotum, which are dark 

 brown; on the latter composed of two well defined, narrow, slightly 

 diverging lines. Antennte rufous, feet and extreme tip of the ovi- 

 positor tinged with rufous. 



Measurements: Length of body, male, 17 mm., female, 18-20 

 mm.; of antenna?, male, 43 mm., female, 35 mm.; of pronotum, 

 male, 5 mm., female, 4.75 mm.; of tegmina, male and female, 19 

 mm.; of hind femora, male, 14 mm., female, 15.5 mm.; of ovipositor, 

 10 mm. 



This species has been found to be quite common in some of the 

 northern counties, having been taken in low, damp meadows and 

 marshes in Fulton, Starke, Marshall, Kosciusko and Steuben. It 

 probably inhabits low damp prairies and meadows throughout the 

 northern half of the State. It evidently begins to reach maturity 

 about July 25th, perhaps a week sooner. A pair in coitu were se- 

 cured in Marshall County on July 29th. It was described from 

 Nebraska and has been recorded only from that State and Indiana. 



109. Orchelimum volantum McNeill. 



Orchdimnm volnntnm McNeill, 88, VI, 1891, 26; Id., 90, XXXn, 1900, 



80, 83; Scudd., 188, 1900, 74. 

 Orchelimum hruueriBl., 10, XX\\ 189:3, 92; Id., 7, 1893, 139; Scudd., 

 188, 1900, 73; McNeill, 90, XXXII, 1900, 80, 83. 



A species of medium size and rather slender body with the pos- 

 terior femora armed beneath, and the ovipositor very broad, nearly 

 straight and of more than average length. 



Cone of the vertex narrow, moderately elevated, rounded at apex. 

 Tegmina long and narrow, a little shorter than the wings; strongly 



