230 PROCEEDINGS OF THE ACADEMY OF [May-Oct., 



recently reduced Plesiacanthops from generic rank to that of a divi- 

 sion or subgenus of Acanthops.-'^ 



As the male sex of this species has not been described, a few notes 

 may be of value : 



cf . Sapucay, Paraguay. December 8, 1909. (WiUiam Foster.) 

 [Hebard Collection.] 



In general form differing from the female in the same fashion as 

 males of the other species of the genus Acanthops differ from the 

 females of their respective species. Form moderately slender, in 

 general depressed, tegmina and wings well developed, considerably 

 surpassing the apex of the abdomen. Head with its greatest depth 

 contained one and one-third times in the greatest width of the head 

 across the eyes; facial shield slightly more transverse than in the 

 female; ocelU large, subcontiguous, placed in a depressed triangle; 

 eyes much more produced than in the female, the apices' more de- 

 cidedly mammillate; antennae setaceous, but slightly heavier than 

 in the female: surface of head with faint traces of the asperities 

 found in the female. 



Pronotum relative smooth, no trace of asperities being present; 

 greatest width across the expansion contained three and one-third 

 times in the greatest length of the pronotum, subequal to the length 

 of the collar; expansion moderately indicated, rounded, margins 

 entire, no median carina or depression indicated. Tegmina of 

 the usual type found in the males of this genus, mortui-foliaceous, 

 greatest width (which is at distal fourth) contained three and one- 

 third times in the tegminal length; costal margin bisinuate, the 

 distal one shorter longitudinally than the proximal one; apex sub- 

 rectangulate with the angle slightly produced lobulate. Wings 

 infumate, with the transverse veins of the anterior humeral and 

 more distinctly of the radiate, but not of the posterior humeral, 

 fields whitish, forming a distinct pattern; greatest width of the wing 

 contained one and three-quarters times in the greatest length of the 

 same; apex narrowly rounded rectangulate, costal margin in general 

 straight, at the distal fourth rounded and thence to the apex oblique 

 truncate. 



Supra-anal plate subtransverse rounded trigonal; cerci not longer 

 than the subgenital plate, subdepressed, subequal in width, the 

 distal joint as long as the two preceding it and truncate at the ex- 

 tremity; subgenital plate shovel-shaped, subtrigonal, the distal 



2" Ann. Soc. Entom. France, LXXXV, p. 179, (1916). 



