50 Annals of the Carnegie Museum. 



67. Diedronotus angulatus (Stal). 



Trophwliis angulatus Stal, Recens. Orthopt., I, p. 44 (1873). 

 Tropidonotus angulatus Stal, Obs. Orthopt., Ill, p. 19 (1878). 



Habitat. — Corumba and Chapada, Brazil (H. H. Smith). 

 The specimens at hand are somewhat variable in color, but are 

 quite typical of the species as found elsewhere. 



68. Diedronotus strigatus sp. nov. 



Tropinolus strigatus Bruner, Horae Soc. Ent. Rossicae, XXXIX, p. 469 (1910) 



(MS.). 



A moderately large, somewhat slender species, in which the tegmina 

 are narrow and quite long, with the apex acuminate. Lateral angles 

 of the disk on the pronotum strongly toothed. General color tes- 

 taceo-cinereous, more or less strongly strigate with grayish fuscous, 

 and without the usual large transverse maculations. 



Head fully as wide as the anterior edge of the pronotum, the occiput 

 short, gently arcuate, and quite prominently transversely ridged, 

 especially in the female; vertex between the eyes about equal in 

 width to the shorter diameter of one of them, the fastigium flat, 

 triangular, the apex slightly acute, even in the female, its lateral 

 edges straight slightly raised above the disk, disk provided with 

 a longitudinal carina which continues posteriorly across the occiput. 

 Frontal costa fairly prominent, sulcate, finely punctate, its sides 

 evenly divergent, continuous to the clypeus. Antennae slender, 

 the basal joints depressed or flattened. Eyes fairly prominent, 

 as long as the anterior edge of the cheeks below them. Pronotum as 

 well as head and body studded with sharp granulations and with 

 the lateral carina* prominent, straight, evenly divergent behind and 

 strongly toothed, their hind end forming a distinct angle with the hind 

 margin of disk; crest or median carina moderately high, profoundly 

 severed by the transverse sulci and strongly crenulato-serrulate 

 towards the hind margin. Posterior and anterior margins of disk 

 acuminate, the former very much so. Tegmina and wings long and 

 narrow, the former decidedly acuminate at their apex. Posterior 

 femora strongly serrate, about normal in length, rather slender on 

 apical half, the genicular lobes acute. Hind tibiae long and slender, 

 ten-spined on the outer margin. Prosternal spine compressed, the 

 apex directed to the rear at almost a right angle. 



General color testaceo-griseous, minutely and sparsely flecked 



