Bruner : South American Acrid< \. 7 



and tegmina and iii the posterior margin of the pronotum, which is 

 distinctly bul broadly angulated, instead of rounded, .1- in Burr's 

 ies. 



General color above obscure fuscous, modified by having the disk of 

 the pronotum dull testaceous, and the sixth ( 9 ) and sixth and seventh 

 (cf) abdominal segments above lemon-yellow. Under side of body, 

 front including clypeus and labrum, base of mandibles, lower third 

 "t sides of pronotum, and the lower part of the mesopleura, flavous 

 Anterior legs ochraceous, the hind femora flavous with an olivaceous 

 tinge on basal three-fifths, the carina? black or blackish, on the apical 

 two-fifths orange-yellow and twice f usco-f asciate ; the knees also black. 

 Hind tibia? somewhat obscure or infuscated and provided with a 

 sub-basal pallid annulus, the tarsi more or less flavous. 



Vertex rounded, entire, slightly produced in advance of the elongate 

 prominent eyes, and, viewed laterally, meeting the front in a somewhat 

 acute angle. Frontal costa sulcate throughout, reaching the clypeus. 

 Antennae as described for M. tigris, the first and second and greater 

 part of third joints flavous, remainder dark fuscous or black. Prono- 

 tum somewhat longer than wide, the posterior lobe a little expanding. 

 the median carina linear and fairly prominent throughout; hind mar- 

 gin widely, and somewhat roundly, angulate, the anterior margin 

 straight; sides longer than high, the lower margin oblique, in the male 

 nearly straight, in the female somewhat sinuate, the posterior angle 

 decidedly acute (cf) or but slightly so (9). Tegmina and wings 

 strongly infuscated, abbreviated in both sexes, about three-fifths (cf ) 

 or one-fourth (9 ) the length of the abdomen. Hind femora moderatel) 

 robust, all the carina? finely serrated, as long as the abdomen in the 

 female, and nearly one-half longer in the male. Tip of male abdomen 

 about as described for tigris; the supra-anal plate and cerci also much 

 the same as in that species. Subanal plate, or last ventral segment, 

 scarcely pubescent, its apex not sinuate; valves of the ovipositor rather 

 straight, long, and slender, the lateral margins quite strongly toothed. 



Length of body, cf, 17.5 mm.. 9, 26 mm.; of pronotum, cf. 2.2 

 mm., 9, 2.9 mm.; of tegmina, cf, 7 mm., 9, 4.75 mm.; of hind 

 femora, cf , 13 mm., 9 , 16 mm. 



Habitat. — The types were collected by H. II. Smith. The male 

 comes from Corumba, Brazil, where it was taken during the month of 

 March; the female bears the label "Chapada, Carhpo, Oct." Other 

 specimens are at hand from the same localities and bear the same 



dale-. 



