182 ORTHOPTERA. 



cloud near the middle of the hind margin, and a black line 

 on the front margin ; hind thighs pale, with two large black 

 spots on the inside ; hind shanks brown, with darker spines, 

 and a broad whitish ring below the knees. Length inch ; 

 exp. above l inch. 



This somewhat resembles the clouded locust, from which, 

 however, it is easily distinguished by its much shorter anten- 

 nae and the dusky cloud on the hinder margin of the wings. 

 I have captured it in pastures, in the perfect state, from the 

 middle of May to near the end of July. I believe that it has 

 never been described before. 



11. Locusta (Tragocephald) viridi-fasciata. Green-striped Locust. 

 (Plate III. Fig. 2.) 



Green ; thorax keeled above ; wing-covers with a broad 

 green stripe on the outer margin extending from the base 

 beyond the middle and including two small dusky spots on 

 the edge, the remainder dusky but semi-transparent at the 

 end ; wings transparent, very pale greenish yellow next to 

 the body, with a large dusky cloud near the middle of the 

 hind margin, and a black line on the front margin ; antennae, 

 fore and middle legs reddish ; hind thighs green, with two 

 black spots in the furrow beneath; hind shanks blue-gray, 

 with a broad whitish ring below the knees, and the spines 

 whitish, tipped with black. Length about 1 inch ; exp. from 

 more than If to nearly 2 inches. 



This insect is the Acrydium viridi-fasciatum of De Geer, 

 who was the first describer of it, the Grryllus Virginianus of 

 Fabricius, the G-ryllus Locusta chrysomelas of Gmelin, the 

 Acrydium marginatum of Olivier, and the Acridium hemipte- 

 rum of Palisot de Beauvois. It is remarkable that a species 

 so strongly marked as this is should have been so profusely 

 named. Palisot de Beauvois seems to have selected the most 

 appropriate name for it ; for the green portion of the wing- 

 covers is thick and opaque, and the dusky portion thin and 

 semi-transparent, as in the wing-covers of Hemipterous in- 



