80 Annals of the Carnegie Museum. 



114. Opsomala viridis Serville. 



Opshomala viridis Serville, Ann. Sci. Nat., XXII, p. 268 (1831). 



Opsomala viridis Burmeister, Handb. Ent., II, p. 611 (1838). 



Arnilia viridis Bruner, Biol. Cent. Amer., Orthopt., II, pp. 254, 255 (1908). 



Habitat. — Specimens, which are referable to this species, come from 

 Rio de Janeiro and Corumba, Brazil, where they were collected 

 during November and March by H. H. Smith. 



115. Opsomala coccineipes (Bruner). 



Arnilia coccineipes Bruner, Proc. U. S. Nat. Mus., XXX, p. 659 (1906). 

 Opsomala coccineipes Kirby, Syn. Cat. Orthopt. Brit. Mus., Ill, p. 419 (1910). 



Habitat. — Corumba, Brazil, during the months of March to July 

 inclusive (H. H. Smith). 



116. Opsomala stali sp. nov. 



A large and robust insect, most nearly related to 0. coccineipes 

 Bruner and 0. viridis Serville, as shown by the synoptic table of the 

 species of this genus, published in the second volume of the Orthoptera 

 of the BioJogia Ccntrali- Americana, pp. 254-255,. May, 1908. 



Size large, the head robust, ascending; occiput about as long as the 

 anterior lobe of the pronotum, gently arcuate; vertex aboutas wide 

 as the frontal costa at the ocellus, depressed anteriorly and separated 

 from the fastigium by a profound transverse sulcus; the fastigium 

 ascending, triangular, rather large, a trifle broader than long, the 

 lateral margins gently arcuate, the apex very gently acuminate, the 

 disk rugose; lateral ocelli large, situated on the lateral carina? very 

 near the upper anterior extremity of the eyes. Frontal costa promi- 

 nent, sulcate throughout, the lateral walls heavy, smooth, meeting 

 above in an acuminate angle, the apex of which just touches the 

 depressed point of the fastigium. Lateral facial carina? rather strongly 

 divergent in their lower half, where they gradually diminish in promi- 

 nence. Front shallowly, but coarsely, punctulate. Antenna? coarse, 

 subensiform, the basal joints somewhat depressed or flattened, their 

 inner lower surface quite strongly infuscated. Pronotum cylindrical, 

 rather closely and strongly punctulate, the anterior and posterior 

 margins above rounded; median carina inconspicuous, but visible 

 throughout, cut by all three transverse sulci, by the hind one most 

 profoundly. Tegmina and wings comparatively wide, surpassing the 

 tip of the abdomen fully one-third of an inch ( 9 ), the apex of the former 



