154 INSECTS INJURIOUS TO VEGETATION. 



makes its appearance with wings in the spring, being found 

 flying about in warm and diy pastures as early as the middle 

 of April or the first of May, and is rendered very conspicuous 

 by its bright colored wings, and the loud noise which it makes 

 in flying. It probably passes the winter in the pupa state, 

 and undergoes its last transformation in the spring; but its 

 history is not yet fully known to me, and this opinion is the 

 result only of conjecture. 



3. Locusta sulphiirea. Yellow-winged locust. 



Dusky brown ; thorax slightly keeled in the middle ; wing- 

 covers ash -colored at their extremities, more or less distinctly 

 spotted with brown; wings deep yellow next to the body, 

 dusky at tip, the yellow portion bounded beyond the middle 

 by a broad dusky brown band, which curves and is prolonged 

 on the hind margin, but does not reach the angle next to the 

 extremity of the body; hindmost thighs blackish at the end, 

 and with two black and two whitish bands on the inside; 

 hindmost shanks and their spines black, with a broad whitish 

 ring just below the knees. Length -^^ to 1| inch; exp. 1| to 

 2^ inches. 



This insect agrees tolerably well with the brief description 

 given by Fabricius of his Gryllus svlphureus, except that the 

 wings are not sulphur-yellow, but of a deeper tint. It is also 

 described and figured by Palisot de Beauvois under the name 

 of Acridium sulphureum. It is a rare species in this vicinity. 

 I have taken it, though sparingly, in its perfect state, in May 

 and in September. The elevated ridge on the top of the thorax 

 is higher than in any other species found in Massachusetts. 



4. Locusta Maritima. Maritime locust. 



Ash-gray; face variegated with white; wing-covers sprinkled 

 with minute brownish spots, and semitransparent at tip; wings 

 transparent, faintly tinted with yellow next the body, uncolored 

 at tip, with a series of irregular blackish spots forming a curved 

 band across the middle ; hindmost shanks and feet pale yellow, 

 with the extreme points of the spines black. Length | to 1\ 

 inch ; exp. 1^^^ inch to 2| inches. 



