1913.] NATURAL SCIENCES OF PHILADELPHIA. 357 



narrower than in B. mendocensis, but narrower and less decidedly 

 sulcate; frontal fastigium similar to that of mendocensis; eyes ovate, 

 moderately prominent. Pronotum similar to that of mendocensis, 

 but with the sinuation of the ventral margin less decided and 

 the humeral sinus subrectangulate. Tegmina about three times as 

 long as the head and pronotum combined, the general form similar 

 to that of mendocensis, but the marginal field is shghtly broader 

 and the discoidal vein has two distinct rami. Exposed portion of 

 the wings twice the length of the pronotum, apex slightly less acute 

 than in ynendocensis. Cephalic tibise with five to six spines on the 

 dorso-cephalic margin. Ovipositor subequal to the head and prono- 

 tum together in length, well arcuate, tapering, the dorsal margin 

 serrato-dentate on the distal half, irregularly serrulate on the proximal 

 half, ventral margin crenulato-serrate distad, becoming weakly 

 crenulate proximad, the surface of the ovipositor scabroso-dentate, 

 subgenital plate broad trigonal with the distal margin rounded. 



General coloration essentially the same as that of mendocensis, 

 but the tegmina have no buff edging and the dorsum of the head has 

 traces of maroon purple linings and the humeral angles of the prono- 

 tum have broken lines of the same color. 



Allotype: cf ; Jujuy, Province of Jujuy, Argentina. AjDril, 1911. 

 (P. Jorgensen.) [Acad. Nat. Sci. Phila.] 



The following characters are those of difference from the female 

 sex: 



Marginal field of the tegmina very broad, subequal to the breadth 

 of the adjacent portion of the discoidal field; the narrowed distal 

 portion of the tegmina slightly broader than in the female ; tympanum 

 with the length nearly twice the width, speculum more regularly 

 narrowing caudad than in mendocensis. Cerci similar to those of 

 mendocensis, but shorter and less robust; subgenital plate with the 

 distal extremity somewhat wider than in mendocensis. 



General color similar to that previously described with the following 

 additions : dorsum of the head and pronotum and the dorsal portion 

 of the lateral lobes of the pronotum finely sprinkled with maroon 

 purple, the antennae strongly washed with the same; tegmina with 

 the extreme proximal portion of the discoidal field washed with 

 olive green, the tympanal curve of the posterior ulnar vein, the 

 speculum and the adjacent portion of the tympanum seal brown; 

 remainder of the anal field of the tegmina olive-yellow; marginal 

 field of the tegmina with a broad cream colored margin. 



