356 PROCEEDINGS OF THE ACADEMY OF [May 



tegmina. Cerci simple, tapering in the proximal two-thirds, straight, 

 distal third regularly falcate inward, the same portion sub- 

 depressed, the apex spinif orm and slightly turned dorsad ; subgenital 

 plate moderately produced, the margin of the same deeply arcuato- 

 emarginate, no styles present. 



Color in general similar to that of the type, but the pleura, lateral 

 lobes of the pronotum, and the base of the limbs cream-buff, the 

 tibise tawny (the cephalic almost liver brown), and the proximal 

 portion of the tegmina of the general color. Tegmina with no pale 

 sutural edging, the posterior ulnar vein lined with chestnut distad 

 from the apical portion of the tympanum. 



Measurements. 



Type Allotype 



(female). (male). 



Length of body 20.7 mm, 15.3 mm. 



Length of pronotum 4.2 " 3.5 " 



Length of tegmen ' 18.5 " 15.5 " 



Greatest width of tegmen 4. " 3.5 " 



Length of exposed portion of wing 10. " 9.2 " 



Length of caudal femur 24.5 " 20.2." 



Length of ovipositor 8. " 



In addition to the type and allotype, we have before us a pair from 

 the type locality (January 29, 1907; December 27, 1907) and a single 

 female from San Ignacio, Province of Mendoza (March 22, 1908). 

 The additional Potrerillos female is slightly smaller than the type, 

 the San Ignacio female distinctly smaller, but otherwise they are 

 inseparable. 



Burgilis grandis n. sp. 



Type: 9 ; Jujuy, Prov. of Jujuy, Argentina. April, 1911. 

 (P. Jorgensen.) [Acad. Nat. Sci. Phila., type No. 5,223.] 

 The combination of small ovipositor and decidedly tapering teg- 



Fig. 21. — Burgilis grandis n. sp. Out- Fig. 22. — Burgilis grandis n. sp. Outline 

 line of ovipositor of type. (X 3.) of tegmen of male allotype. ( X 2.) 



mina are diagnostic of this species, the character of the marginal 

 field of the male tegmina also being very distinctive. 



Size medium; form little compressed. Head with the fastigium 



