54 NEW NORTH AMERICAN ACRIDID^ BRUNER. 



These brown lines are much darker in the male, where the antennae and 

 the anterior and middle legs are also of this color. The dark lines are 

 broadly bordered with testaceous, of which color are also the antennae 

 of the female, a line along the upper aud lower edges of the posterior 

 femora, and also the tarsi of the posterior pair of legs. There are also 

 lines of the brown along the upper carina and upper edge of the outer 

 face of the posterior femora, which terminate at a rather wide preapi- 

 cal annulus of the testaceous color. Posterior tibire bright red, in some 

 specimens inclining to purplish at the immediate base aud towards the 

 apex; the spines black-tipped. 



Length of body, $ , 27-29 mm , 9 , 43 mm ; of antennae, $ , 14 mm . 9 , 10 n,m ; 

 of pronotum, $ , 4.85 mm , 9 , G.45 mm ; of tegmina, $ , 23-26 ram , 9 , 35 m '" ; 

 of hind femora, S , 15.5-17 ram , 9 , 21-24 mm ; of hind tibiae, $ , 14.5-16 mi ", 

 9 , 20-21-5 mm . 



Hab. — El Paso, Tex.; also Lerdo, in the State of Durango, Mexico, 

 during November (L. Bruner). 



This locust was only met with among the sua? producing plant (a sort 

 of Agave, I believe) growing upon the rocky hills back from the rivers. 

 It is very active, wild, and difficult to capture, and when disturbed flies 

 great distances, invariably alighting among the thorny, rigid, and 

 fleshy leaves of the plant above referred to. Whether or not it feeds 

 upon the leaves of this plant I was unable to ascertain. 



Mermiria maculipennis sp. uov. 



Large and robust, with t he tegmina more or less mottled. Testaceous 

 and brown. 



Head large and wide, the occiput shorter than in M. neo-mexicana and 

 M. alacris ; face straight, less oblique than in those species ; eyes large, 

 quite wide, and prominent ; vertex not quite so wide as in the species 

 just mentioned, short and broadly rounded in front, not silicate ; lateral 

 foveohe lunate and small; frontal costa moderately prominent above, 

 slightly widening and fading below, gently silicate above the ocellus ( 9 ) 

 or throughout ( 8 ). Antennae long, of medium width near the base, apex 

 acuminate. Pronotum broad, without lateral carinae, subcylindrical 

 above, the posterior lobe expanding; anterior margin nearly straight, 

 posterior margin subaugulate. Tegmina extending just beyond the tip 

 of theabdomen, with the nerves and veins prominent. Posterior femora 

 robust, reaching past the tip of the body and wings in both sexes. 

 Posternal spine quadrate, short, bluntly acuminate, directed gently to 

 the rear. 



Dull testaceous, in some specimens inclining to ferruginous, with the 

 usual dark band along the sides of the head and pronotum, which ex- 

 tends upwards upon the edges of the disk of the latter; occiput fur- 

 nished with two rather narrow, somewhat interrupted central brown 

 stripes inclosing a still narrower one of yellow. Median carina of the 

 pronotum sometimes occupied by a narrow brown stripe. Tegmina with 



