354 PROCEEDINGS OF THE ACADEMY OF [May^ 



BURGILIS St&I. 



This hitherto monospecific genus is represented in the present 

 series by three species, none of which are the same as the type 

 species — B. curta (Serville). The following key will assist in the 

 determination of the four species now known. 



A.— Ovipositor of female nearly straight curta (Serville). 



AA. — Ovipositor of female distinctly curved. 



B. — Ovipositor distinctly exceeding the cephalic femora in length. 

 Exposed portion of wings of male very slender, the depth 



contained over four times in the length of same 



mendosensis n. sp. 

 BB. — Ovipositor subequal to the cephalic femora in length. Ex- 

 posed portion of wings of male less slender, the depth 

 contained less than four times in the length of same. 

 C. — Tegmina tapering distad; marginal field suddenly 

 narrowed mesad. Costal margin of male tegmina 



markedly white mesad grandis n. sp. 



CC— Tegmina tapering gradually distad; marginal field not 

 suddenly narrowed mesad. Costal margin of male 

 tegmina not white mesad missionum n. sp. 



Burgilis mendosensis n. sp. 



Type: 9 ; Potrerillos, Prov. of Mendoza, Argentina. Elev. 1,368 

 meters. December 26, 1907. (P. Jorgensen.) [Acad. Nat. Sci. 

 Phila., type No. 5,221.] 



The larger ovipositor of this species readily separates it from the 

 other forms before us. In the male the very narrow exposed portion 

 of the wings is sufficiently diagnostic to immediately separate the 

 form. 



Size medium; form subcompressed. Head with the fastigium of 

 the vertex hardly wider than half of the proximal antennal joint,, 

 moderately declivent, moderately constricted mesad, rather bulbous 

 distad, sulcate; facial fastigium slightly broader than that of the 

 vertex, almost touching the same; antennae about twice the length 

 of the body; eye moderately prominent, 

 subovate, of medium size. Pronotum with the 

 dorsum deplanate, very faintly concave 

 Fig. 20.~Burgilis men- cephalo-caudad, the width of the dorsum 



H?eT/'oviposito^"of subequal and contained one and one-half times 



type. (X3.) in the pronotal length ; cephalic margin faintly 



arcuato-emarginate, caudal margin arcuate, 



lateral angles continuous and distinct, most decided caudad, wher& 



they are very slightly diverging; lateral lobes with the depth con- 



