1913.J NATURAL SCIENCES OF PHILADELPHIA. 359 



slightly surpassing the tegmina in length. Ovipositor subequal to 

 the head and pronotum in length, arcuate, slightly tapering, distal 

 half of the dorsal margin serrato-dentate, ventral margin crenulato- 

 dentate for almost the entire length, surface of the ovipositor scabroso- 

 dentate except on the swollen proximal portion; subgenital plate 

 trigonal with the distal margin very narrowly emarginato-truncate 

 mesad. 



General color pale clay color, the exposed portion of the wings, 

 distal half of the tegmina, anal field of the same, and all or part of the 

 tibiae apple green. We presume apple green was the color of the 

 whole insect in life. Eyes burnt umber. 



Allotype: cf ; Misiones, Argentina. December 14, 1910. (P. 

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

 . The characters here given are those of difference from the female. 



Tympanum of the tegmina very similar in form to that of B. 

 grandis, but proportionately smaller; discoidal vein occasionally 

 (on one tegmen) with but two rami toward the sutural margin. 

 Cephalic tibiae occasionally with six spines on the dorso-caudal 

 margin in addition to the distal one. Cerci more elongate than in 

 the other species of the genus, the form nearer that found in mendo- 

 censis, but slenderer, the distal extremity less depressed and slightly 

 more spiniform; subgenital plate arcuato-emarginate distad, flanked 

 laterad by brief styliform processes. 



General color sulphur yellow on the head and pronotum, passing 

 into buff on the abdomen, tegmina and wings pale apple green, the 

 limbs more or less washed with the same color. Tegmina with the 

 marginal field unicolor; anal field with the tympanum and the longi- 

 tudinal area adjacent to it more or less uniformly prout's brown. 

 Eyes russet. 



Measurements. 



Type Allotype 



(female). (male). 



Length of body ... 16.5 mm. 14.5 mm. 



Length of pronotum 3.8 '' 3.3 " 



Length of tegmen 21.3 " 17.5 " 



Greatest width of tegmen 4.1 " 3.8 " 



Length of exposed portion of wing 10. " 8.3 " 



Length of caudal femur 23. " 20.5 " 



Length of ovipositor 6. " 



In addition to the type and allotype, we have before us two para- 

 typic males taken January 12, 1910, and December 12, 1909. These 

 specimens show no noteworthy differences from the allotype. Infor- 

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