1913.] NATURAL SCIENCES OF PHILADELPHIA. 289 



cephalad. Tegmina broad-ovate, surface subcoriaceous as in all of 

 the species of the genus ; costal margin strongly arcuate on the proxi- 

 mal fourth, thence obliquely arcuato-truncate to the broad arcuate 

 obtuse-angulate apex, sutural margin moderately arcuate; stigma 

 hardly indicated; anal field elongate subpyriform, anal vein reaching 

 the sutural margin about three-fourths the length of the same from 

 the base. Wings not exceeding the tips of the tegmina. Supra- 

 anal plate trigonal in form, lateral margins arcuato-bisinuate, apex 

 slightly acute, median carina pronounced, sublamellate distad; cerci 

 moniliform, short; subgenital plate slightly exceeding the supra-anal 

 plate. Cephalic limbs (for the sex) quite slender; coxae about 

 two- thirds as long as the cephalic femora, cephalic margin with six 

 to seven recurved spines and numerous intercalated spinulations, 

 caudal margin with the same character of armament, lateral margin 

 with numerous spinulations, internal face of the coxae with numerous 

 scattered points; cephalic femora subequal in length to the pronotal 

 shaft, its greatest depth contained about six times in the length, 

 external margin armed with five spines, internal margin armed with 

 fourteen spines, of which only the penultimate and antepenultimate 

 are markedlj'' smaller than the others, discoidal spines three in 

 number; cephalic tibiae armed on the external margin with nine 

 spines; on the internal margin with sixteen to seventeen spines 

 exclusive of the apical claw; cephalic metatarsi slightly longer than 

 the remaining tarsal joints. Median and caudal limbs similar to 

 those of other species of the genus. 



General color burnt umber, washed with wood brown on the limbs, 

 the tibiae and tarsi distinctly bice green in tone. Tegmina with the 

 proximal two-thirds shining clove brown, the remainder 

 dull wax yellow, the veins reticulate with umber. 

 Eyes clove brown. 



Allotype: cT ; Sapucay, Paraguay. December 10, 1905. 

 (William Foster.) [Acad. Nat. Sci. Phila.] 



Differing from the type in those characters which are 

 sexual in the genus, the more important differences 

 being here given. Fig. 4.— Cop- 



Size large; form elongate, slender. Ocelli large, topteryx 

 placed in a triangle ; facial shield with the dorsal margin n sp'^Dor- 

 arcuato-emarginate laterad. Pronotum with the great- sal outline 

 est width contained four and a half times in the depth ^Natural 

 of the same; lateral margins obscurely crenulate, this size.) 

 more distinct on the collar than elsewhere. Tegmina 

 slightly surpassing the apex of the abdomen, the greatest width 



