180 OETHOPTEEA. 



surrounded Ly two broad black bands ; hind shanks coral-red, 

 with a black ring immediately below the knee, and followed 

 by a white ring, black at the lower extremity also, with the 

 tips of the spines black. In some individuals there is an 

 additional black ring below the white one on the shanks. 

 Length from -^^ to above y^g- inch ; exp. li*jj to l^g inch. 



The marbled locust, which is one of our prettiest species, 

 is found in the open places contiguous to or within pitch-pine 

 woods, flying over the scanty grass and reindeer moss which 

 not unfrequently grow in these situations. It is marked on 

 the wings somewhat like the barren-ground locust, but is 

 invariably smaller, with the thorax much more contracted 

 before the middle. It appears, in the perfect state, from the 

 middle of July to the middle of October. 



8. Locitsta eucerata}^ Long-horned Locust. 



Ash-colored, variegated with gray and dark brown ; anten- 

 na3 nearly as long as the body, and with flattened joints ; 

 thorax veiy much pinched or compressed laterally before the 

 middle, with a slightly elevated longitudinal line, which is 

 interrupted by two notches ; wing-covers and wings long 

 and narrow ; the former variegated with dusky spots, and 

 semi-transparent at tip ; wings next to the body yellow, 

 sometimes pale, sometimes deep and almost orange-colored, 

 at other times uncolored and semi-transparent ; with a broad 

 black band across the middle, which is narrowed and pro- 

 longed on the hinder margin, and extends quite to the inner 

 angle ; beyond the band the wings are transparent, with the 

 tips black or covered with blackish spots ; hindmost shanks 

 whitish, with a black ring at each end, a broad one of the 

 same color just above the middle, and the spines tipped with 

 black. Length j inch to tV inch ; exp. 1-^,^ inch to more 

 than 1^ inch. 



The wings of this species are very variable in color at the 

 base. The fenestralis described by M. Serville has the base 



[ 10 L. eucerata must be referred to (Edlpoda. — Uhleu.] 



