OF PHILADELPHIA. 237 



[From Vol. 4, 1825, pp. 307—345.] 



Descriptions of new HEMIPTEROUS INSECTS collected in tke Expedition 

 to the Rocky Mountains, performed by order of Mr. Calhoun, Secretary 

 of War, under command of Major Long. 



Kead June 1st, 1824. 



GRYLLUS Fabr. 



1. Gr. iEQUALis. — -Hemelytra spotted with brown ; wings pale 

 yellowisb at base, with a black band and dusky tip. 



Inhabits the United States. [308] 



Head varied with brown and light gray: thorax varied with 

 brown and dull rufous, with a carinate line : hemelytra dark cine- 

 reous, with numerous unequal small dark brown spots : wings 

 sulphurous at base, then a black band arcuated behind so as 

 nearly to reach the inner angle ; tip dark cinereous, darker at 

 the angle, or with small fuscous spots on that part : feet pale 

 cinereous, spotted with fuscous : hind thighs within with four 

 black bands : posterior tibiae sanguineous. 



Length to the tip of the hemelytra, one inch and two-fifths. 



Not an uncommon species. The thorax is not gradually raised 

 into a carina, but the line is abrupt and of little elevation. 



2. Gr. NUBiLus. — Black ; wings glaucous. 

 Inhabits Arkansa. 



Head with the frontal line not grooved ; thorax with a slightly 

 and equally elevated line; hemelytra rather short; feet dusky, 

 tinged with dull rufous : posterior pair black, the thighs with a 

 whitish annulation near the tip : beneath pale. 



Found in abundance near the base of the Rocky Mountains, in 

 company with the succeeding, and like it ascending into the 

 atmosphere in great numbers. 



3. Gr. BiviTTATUS. — A yellowish line each side above from 

 the front to the tip of the hemelytra. 



Inhabits Arkansa. [309] 



Mouth white ; superior orbits yellowish : thorax with an ele- 

 vated capillary line, and three transverse impressed ones, a yel- 

 lowish marginal line each side : hemelytra with small dusky spots 

 1825.] 



