ORTHOPTERA OF NEW ENGLAND. 451 



ACRIDIUM ALUTACEUM. Haixis. 



Leather-colored GrassJiopper. 



Dirty brownish yellow, a paler yellow stripe on the top of the 

 head and thorax ; a slightly elevated, longitudinal line on the top 

 of the thorax ; wing covers semi-transparent, with irregular brown- 

 ish spots ; wings transparent, uncolored, netted with dirty yellow ; 

 abdomen, with transverse rows of minute blackish dots; hind 

 femora, whitish within and without, the white portion bounded by 

 a row of minute distinct black dots, and crossed, herring-bone 

 fashion, by numerous brown lines ; hind tibiae reddish, with yellow- 

 ish-white spines, which are tipped with black. 



Length to the end of abdomen, one and three-fourths inches. 



AcRiDroM KUBiGiNosuM. Harris. 



Light rust red, somewhat uniform. Wing covers opaque, rather 

 paler on the overlapping position, without spots, or sprinkled over 

 with dim, small, dusky spots. Wings transparent, slightly red- 

 dish towards the tip ; veins blackish ; posterior femora reddish ; 

 the flat disk whitish, with a row of black dots above and below ; 

 apex with a lunate black spot on the side. Spines of the tibiae 

 whitish, tipped with black. 



Length of female about one inch and a half, — male much 

 smaller. 



Genus Mel ANOPLus. Stal (1873). 



Eyes nearly equal in the sexes, never broader than the length of 

 the cheek ; no distinct lateral carinas ; mesosternum and metaster- 

 num together longer than wide ; upper margin of the hind femora 

 smooth ; first joint of hind tarsi of the same length as the last 

 joint, and a little stouter ; pulviUi between the claws, large ; last 

 joint of the abdomen of the male much swollen. 



The species may be separated as follows : — 



, / "Wing covers shorter than the abdomen, or of the same length . 2. 



I Wing covers much longer than the abdomen .... 5. 

 2 f Median carina distinct on the front lobe of the pronotum . . 3. 



I Median carina indistinct or wanting on front lobe of the pronotum, i. 

 - f With a yellow stripe along the sides .... femoratus. 



\ With no yellow stripe along the sides .... punctulatus. 

 , j Wing covers as long as the abdomen collinus. 



\ Wing covers much shorter than the abdomen . . . rectus. 

 g f Anal cerci pointed at the tip femur-rubrum. 



I Anal cerci broadly rounded at the tip atlanis. 



