THE CANADIAN ENTOMOLOGIST. 91 



two narrow streaks, which enclose a whitish area and extend a little 

 beyond the posterior transverse suture, where they taper to an end. Sub- 

 genital plate of male yellow. Basal third of ovipositor dark brown, the 

 remainder light reddish-brown. 



Measurements. — Length of body, £ , 17 mm.; $, 17.5 mm.; of pro- 

 notum, o* and $, 4 mm.; of tegmina, q* , 20 mm.; $, 18 mm.; of hind 

 femora, £ , 14 mm.; $ , 14 5 mm ; of ovipositor, 7.5 mm. 



This graceful and prettily marked species was found to be quite com- 

 mon among the rank grasses and sedges growing about the margins of a 

 tamarack swamp near Kewanna, Fulton county. It was first taken on 

 August 26th and again on September 24th, when it appeared more plen- 

 tiful than before. It is the smallest and most slender of the ten 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. 



Orchelimu?n camftesti'e, nov. sp. 



A species of less than medium size, with the wing-covers narrow and 

 of almost equal width throughout, the posterior femora unarmed beneath, 

 and the ovipositor short and narrow. 



Cone of the vertex prominent, narrow, rounded at the apex ; the sides 

 of the frontal deflexed portion rapidly converging to form a very acute 

 wedge. Wing-covers long, narrow, not widened in the middle as in O. 

 vulgar e, concinnum, etc., tapering slightly on the apical third to a rounded 

 end ; their length equalling that of the wings in the $ , a little shorter in 

 the $ . Posterior femora with the basal half quite stout, the length less 

 than that of the tegmina. Cerci of male slender, cylindrical, somewhat 

 pointed, the apical half curved slightly outwards, the basal tooth short 

 and weak. Ovipositor short, narrow, moderately upcurved, and tapering 

 to a delicate point. 



Colour. — Tegmina and wings almost uniform transparent olivaceous 

 brown. The usual dark reddish-brown band upon the occiput and disk 

 of pronotum is margined on the latter with two very narrow and darker 

 brown stripes, which extend back to the middle of the posterior lobe of 

 the pronotum. Face, and usually the hind femora, a dirty olive brown ; 

 the latter, when dry, with a blackish longitudinal band on the exterior 

 face. In the female the only green on the body is on the lower part of 

 the sides of the pronotum and on the anterior femora. The only male at 

 hand has the posterior femora green, but otherwise is coloured like the 

 females. Ovipositor light reddish-brown. 



