THE DECTICIN^ OF NORTH AMERICA— CA UDELL. 379 



onl}^ specimens examined; anterior tibife armed above on the outer 

 side onl_y with three spines. Elytra as in xqualls but extending- 

 beyond the pronotuni a distance scarcely more than one-half the tho- 

 racic length and without a black spot on the outer apical angle. Sub- 

 genital plate as in mqualis but the last abdominal segment is between 

 that species and nevadensis, the apical denticulations being almost as 

 elongate as those of seqiiaUs and the intervening sulcus V-shaped as 

 in nevadensis (fig. 65). The cerci are very 

 different from those of the preceding spe- 

 cies; here the inner tooth is short and placed 

 about the center and the tip of the cercus is 

 nearly in a line with the basal portion (tig. 64). 

 The color is a yellowish brown with darker 

 mottlings on the legs and pronotum; elytra ^ , „, , 



° * ^ . Figs. (54, 65.— iDiosTATUS siNUATA. 



light brown with the memljraneous portion u, cercus of male, o.^, last 

 black, the outer apical angles not marked by ^^"""^^ abdominal segment of 



^ " "THE MALE. 



a black spot. 



Measurements. — Length, pronotum, 6 mm.; posterior femora, :::'0; 

 elytra, 3.5. 



Type. — In the Scudder collection. 



Specimens examined. — Two males. Fort Whipple, Arizona (E. 

 Palmer). 



The most striking characters of this species is the poorly developed 

 lateral lobes of the pronotum, the absence of any lateral carinte and 

 the structure of the cerci. This species resemldes very much the 

 Eremopedes scudderl of Cockerell, and it may belong to Eremopedes 

 rather than to Idiostatus. 



IDIOSTATUS BILINEATUS Thomas. 



Stdroxys hilmeata Thomah, Rep. U. S. Geol. Surv. W. 100 Mer., V. 1875, p. 905. 

 Idiostatus bilineatus Scudder, Can. Ent., XXVI, 1894, pp. 181, 183; Cat. Orth. 



U. S., 1900, p. 78.— WooDWORTH, Bull. No. 142, Calif. Exp. Stat., 1902, p. 15.— 



KiRBY, Syn. Cat. Orth., II, 1906, p. 193. 



Description. — Head of medium size, moderately inserted into the 

 pronotum; fastigium considerably produced, apically as broad as one of 

 the eyes; front slightly convex. Eyes not very prominent, round. 

 Pronotum large, posteriorly produced and inclined upward, especially 

 in the male where they cover the base of the wings. Lateral lobes 

 well developed, about two-thirds as deep anteriorly as long and with 

 scarcely any sinus, almost vertical with very broadly rounded lateral 

 caringe, not present anteriorly; median carina merel}^ indicated poste- 

 riorly; disk moderately transversely convex, smooth, without sulci, 

 truncate both anteriorly and posteriorly, sometimes slightly rounded 

 behind. Abdomen smooth, without carina, thick and heavy, somewhat 

 as in the genus Anabrus. Ovipositor nearly straight, slightly curved 

 upward, as long as the posterior femora and apically unarmed. Cerci 



