78 



Disc of pronotum nearly flat, the median carina abrupt but not 

 greatly elevated, cut into two equal halves by a distinct though slight 

 notch; lateral carinas distinct but broken, very slightly arcuate; pos 

 terior mnrgin of the pronotum foni.ing a rather sharply marked right 

 angle; tegniina rather broad and short, but little surpassing the tip 

 of the abdomen, the basal half of the costal margin sinuate, the apex 

 broadly rounded, scarcely obliquely docked; wings short and broad, 

 pellucid or nearly pellucid, with a post-median costal stigma and more 

 or less duskiness near the outer border, the principal veins of the 

 front area broader than long. Type : CEd'qjoda sordida Burm. 



The flatter disc of the pronotum, with its slight but abrupt me- 

 dian carina and almost equally distinct lateral carinaj distinguish 

 this at once i'rom Tragocephala, with which Dr. Stal unites it. As he 

 has pointed out, the intercalary ^ein of the tegmina approaches the 

 ulnar vein, instead of lying midway between it and the radial vein, 

 a^ in Tragocephala. 



Synopau of the species. 



1. Wings most deeply fuliginous at the apex. . . . sordidus. 



1. Wings most deeply fuliginous next the middle of the outer 



border 2. 



2. Summit of head with a faint median carina. . . . coMalis. 

 2. Summit of head with a distinct, but slight, median carina, parvus. 



1. Encoptolophus sordidus. 



GUdipoda sordida Burm., Handb. d. Ent., ii, 643; Scudd., Bost. 

 Journ. Nat. Hist., vii, 473; Walk., Cat. Derm. Brit. Mus., iv, 732; 

 Thorn., Syn. Acrid. N. Amer., 116 ; Glov., 111. Orth., pi. 10, fig. 11. 



Acridium (CEdipoda) sordidum De Haan, Bijdr. Kenn. Orth., 143. 



Tragocephala sordida Stal, Recens. Orth., i, 119; Scudd., Geol. N. 

 Hampsh., I, 373. 



Locusta periscelidis Say. Ms.; Harr., Cat. Ins. Mass., 56. 



Locusta nebulom Harr., Ins., Inj. Veg., 1st ed., 146 ; 2d ed., 157 ; 

 3d ed., 181 ; Emm., Agric. N. York, v, 146, pi. 9, fig. 7, 



(Edipoda nebulosa Erichs., Arch. f. Nat., ii, 230; Uhl., in Harr. Ins. 

 Inj. Veg., 3d ed., 181. 



This insect is found from middle N. England to Maryland and 

 Tennessee and, more rarely, to N. Florida ; and westward to Ne- 

 braska, Iowa and Minnesota. 



