SYNOPTIC LIST OF PARAGUAYAN ACRIDID.E, OR LO- 

 CUSTS, WITH DESCRIPTIONS OF NEW FORMS. 



By Lawrence Bruner, 



of the University of Nebraska. 



The present paper is based primarily on the extensive collection 

 obtained from Mr. W. T. Foster, of Sapucaj, Paraguay, and now 

 belonging- to the United States National Museum. In addition, the 

 writer has personally collected in that country, besides having pur- 

 chased several small collections from that section of South America. 



To make the ]>aper as complete as possible, Giglio-Tos's papers have 

 been consulted, and all the forms not represented in the collections 

 studied have been included. 



TABLE FOR DETERMINING THE SUBFAMILIES OF PARAGUAYAN 



LOCUSTS. 



a. Claws of feet without a cushion or aroUum between them ; pronotum extending 



over the abdomen; tegmina or front wings lot)iform Tettigin.e 



aa. Claws with the cushion or aroUum present; pronotum not extending over the 

 abdomen. 

 b. Antenna-, or feelers, shorter than the front femora, or thighs. 



c. Head short, compressed in front Eumastacin.e 



cc. Head greatly elongated, body apterous or subapterous Proscopin.e 



bb. Antennai as long or longer than the front femora, 

 c. Prosternum, or breast, between base of front pair of legs smooth ; not provided 

 with a tubercle, swelling, or spine. 

 d. Fastigium of the vertex but little declivous, meeting the face in a more or 

 less well-defined angle, the face usually very oblique. Wings, as a rule, 



without a dusky band Truxalin.e 



dd. Fastigium of the vertex rounded at its point of junction with face, the 

 latter vertical or nearly so. Wings when present usually with colored 



disk and well-defined dusky band CEdipodin'^ 



■ CC. Prosternum, or breast, between base of front pair of legs laminately elevated 

 in front, tuberculate or spined. 

 d. Foveolte of the vertex above, contiguous, forming the apex of the fastigium. 

 Rather clumsy insects, usually without or with abbreviated wings, but 



occasionally with these appendages complete • Pyrgomorphin^e 



dd. Foveolse of the vertex lateral, never forming the apex of the vertex, often 

 closed behind or entirely wanting. Prosternum distinctly spined or 

 tuberculate. Wings variously formed Acridiix.e 



Proceedings U. S. National Museum, Vol. XXX— No. 1461. 



613 



