183 



the wings black, those of the costal area white. The four anterior tibias are 

 reddish, obscurely banded, or, rather, annulated, with white. 



Length, 5 lines. Arctic America (Kirby). 



Dark ash-colored ; a large, white pa,tch between four black spots on the 

 top of the pronotum. A white spot on the top of the hind femora. Prono- 

 tum nearly or quite as long as the wings ; sometimes varies in wanting the 

 white spot on the top of the pronotum. 



Length, 0.55 to 0.6 inch. Massachusetts (Harris). 



It is distinguished from T. ornnta by its longer pronotum and greater 

 size, and also by the prominence of the vertex, which advances considerably 

 in front of the eyes, having the front border granulated ; this latter feature 

 also distinguishes it from T. cucullata and T. rugosa. The males are much 

 narrower than the females. (Scudder.) 



Massachusetts, Maine, New Hampshire, Minnesota (Scudder) ; Arctic 

 America, Hudson's Bay, Lake Huron (Walker). 



T. orisatn, Scudd., Bost. Jour. Nat. Hist., VII, 474. 



Syu., Acrydixnn ornatum, Say, Am. Ent., Le Conte ed., I, 10, PI. v, Fig. 1. 

 Tetrix arenosa, Burm., Handb. Ent., II, 659. 

 dorsalis, Harr., Eep., 3d ed., 186. 

 quadrimaculata, Harr., Eep., 3d ed., 186. 

 biUneata, Harr., Eep., 3d ed., 186. 

 sordida, Harr., Eep., 3d ed., 187. 

 (Not T. ornata, Harr.) 



This species is smaller than T. granulata ; has the vertex but little 

 thrust forward in advance of the eyes, and the front border nearly straight 

 instead of angulated. The pronotum is shorter than in Ihe preceding, and 

 the wings are smaller. Both this and the preceding species have almost 

 every conceivable variation of ornamentation, upon which, almost exclusively, 

 Harris established his specific differences ; but, as Uhler has remarked, 

 " Color and style of marking are of very little value in separating the species 

 of Tettix." (Scudder.) 



Massachusetts, New Hampshire, Maine, Vermont, Connecticut, Missouri 

 (Scudder) ; Southern Illinois (Thomas). 



I give herewith the descriptions of the various synonyms : 



Acrydium ornatum. Say. 



Whitish; fuscous beneath.' Pronotum nearly as long as the wings. 



