L36 



in suitable localities throughout the state. It was first described from 

 Texas and has not before been recorded east of Illinois, though it has been 

 taken by myself at Celina, Ohio. It song is much more faint than that of 

 Q. rujgare, and the z-e-e-e-e is much less prolonged. 



ff. The tibia' and tarsi green or reddish-brown. 



26. OrciielImum silvaticum, McNeill. 



Orchelimum sUvaHcum, McNeill, Psyche, VI., February, 1891, 26. 



Scudder, Rep. Fnt. Soc. Ont., NNIIL, 1892, 73. 

 ! Xiphidium spinulosum, Redtenbacher, Monog. der Conoceph., April, 

 1891, 189. 



A somewhat smaller and less robust species than 0. mdgare, though the 

 proportional measurements of the two are almost the same. The pro- 

 notum is shorter, the tegmina more narrow, and in the female the latter 

 are slightly exceeded by the wings : equalling them or a little shorter in 

 the male. The hind femora reach to or slightly beyond the apex of teg- 

 mina and are armed on the lower outer carina with three or four minute 

 spines. The general color is the same as that of wlgare, but the blackish 

 stripes on the margin of the brown discal stripe of pronotum are more dis- 

 tinct than in that species. 



Measurements : Male — Length of body, 17.5 mm.; of pronotum, 4.5 mm.; 

 of tegmina, 16.5 mm.; of hind femora, 15 mm. Female — Length of body, 

 17.5 mm.; of tegmina, 17 mm.; of hind femora, 15 mm.; of ovipositor, 8 mm. 



I am inclined to believe that Redtenbacher's Xiphidwm spinulosum is this 

 species. The measurements as given by him are somewhat greater, but 

 otherwise the description agrees. McNeill's name, however, has the 

 priority. 



In Indiana this species has, up to the present, been taken only in Vigo 

 county, where it frequents the borders of cultivated fields and open woods, 

 reaching maturity about August 20th. " Its stridulation," says McNeill, 

 " is quite distinct from that of vulgare. It consists of the same two ele- 

 ments, but the zip is repeated many times very rapidly so as to make 

 almost a continuous sound and the z-e-e-ee is comparatively short and very 

 constant, lasting about eight seconds. The first part of the song lasts 

 from three to five seconds." 



bb. Face with a dark reddish-brown stripe down the center. 



g. Stripe broadly expanded on the lower half of face. Size 

 medium. 



