ORTHOPTERA OF INDIANA. 389 



This graceful and prettily marked species is quite common among 

 the rank grasses and sedges growing about the margins of tamarack 

 swamps and lakes in Fulton, Marshall, Starke, Lake, Kosciusko and 

 Steuben counties, where it reaches maturity about July 20th. It is 

 probably a species of northern range which does not occur in south- 

 ern Indiana. It is the smallest and most slender of the eight species 

 of the genus so far known to occur in the State, and its markings are 

 very distinct from those of any of the others. 



107. Orchelimum delicatum Bniner. 



OreheUmum (/mcile Bvan., 2 5, XXIII, 1891, 70. 



OrcheUmum deUeatitm Bruu., 2 7, HI, 1892, 264; Scudd., 18 8, 1900, 73; 

 McNeill, 90, XXXn, 19a), 77, 80. 



"A slenderer and somewhat smaller insect than 0. vulgnre, from 

 which it differs in the form of its pronotum and of the ovipositor. 

 The tubercle of the vertex is short, broad, and has the apex rounded. 

 The tegmina and wings are of moderate length, very delicate in tex- 

 ture, and in the male furnished with an inconspicuous musical ap- 

 paratus. Legs slender, the posterior femora not quite reaching the 

 tips of the closed tegmina. Terminal segment of the male abdomen 

 quite broad; the anal cerci stout and acuminate, with the internal 

 tooth minute; sub-genital plate broad and long, reaching beyond the 

 tips of the cerci. The ovipositor unusually long, broad, nearly 

 straight and fine pointed. 



"In color it is a pale transparent green with a broad reddish brown 

 band upon the head and pronotum, continuous from the tip of the 

 vertex to the posterior transverse indentation of the pronotum, some- 

 what paler in the middle; upon the latter, rather broadly bordered 

 by yellowish white throughout. Face and mouth parts together with 

 the genital armature of the male ochreous; ovipositor light reddish 

 brown. Tarsi and sometimes also the tibiffi a trifle infuscated." 



"Length of body, male, 16 mm., female, 17.5 mm.; of antenna, 

 male and female, about 50 mm.; of pronotum, male, 3.8 mm., female, 

 4 mm.: of tegmina, male, 19 mm., female, 20 mm.; of hind femora, 

 male, 14 mm., female, 15 mm.; of ovipositor, 11-12 mm." 



This species was described from West Point and Lincoln, Ne- 

 l>raska, where Bruner found it common about the margins of ponds 

 .and along the edges of streams, also at electric lights. In Indiana 

 it has been noted only in Marshall and Starke counties, where a half 

 'dozen specimens were secured in lowland meadows near large lakes 

 •on July 30th and August 20, 1902. It probably occurs throughout 

 the lake region of the northern third of the State. It has not before 

 been recorded east of Nebraska. 



