474 Materials for a Monograph 



Length of body, 1.05 in. ; spread of wings, 1.75 in. ; 

 depth, .46 in. 1 9 . 



Texas, (Mus. Comp. Zool.) 



TETTIX, LATKEILLE (emend.) 



See Tettigidea and Batrachidea. 



* 1. T. GRANULATA. 



Acrydium granulatum, Kirby, Faun. Bor. Am. Ins. ; 251. 



(1837.) 



Tetrix ornata, Harr., Cat. Ins. Mass. ; 57. (1835.) 



" " Harr., Report, 3d ed.; 186. (1862.) 



(Not Acrydium ornatum, Say.) 



This species may be distinguished from T. ornata^ 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 angulated; in 

 this latter feature it may also be similarly distinguished 

 from T. cucullata and T. rugosa, as also by its narrower 

 pronotum ; the males are much narrower than the females. 



Mass., (H. Coll., Sanborn, Shurtleff, S. H. S.) Maine, 

 (Packard.) N. Hampshire, (H. Coll.) Minnesota, (S. 

 H. S.) 



* 2. T. ORNATA. 



Acrydium ornatum. Say, Amer. Entom. ; I. PI. V. (1824.) 

 " Say, Ent. of N. Am. (ed. LeConte) ; 



I. 10. PL V. fig. 1. (1859.) 



Tetrix arenosa, Burm., Handb. d. Ent. ; II. 659. (1838.) 

 " dorsalis, Harr., Report, 3d ed. ; 186. (1862.) 



" quadrimaculata, Harr., Report, 3d ed.; 186. (1862.) 

 " bilineata, Harr., Report, 3d ed. ; 186. (1862.) 



< sordida, Harr., Cat. Ins. Mass. ; 57. (1835.) 



" " Harr., Report, 3d ed. ; 187. (1862.) 



(Not Tetrix ornata, Harr., Cat. and Report.) 

 This species is smaller than T. granulatum, has the ver- 

 tex but little thrust forward in advance of the eyes, and 



