274 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



quently absent, the ventral margins of the median femora are 

 always smooth, those of the caudal femora usually bear a few small 

 spines but in hemidactyla these latter margins are distinctive, bear- 

 ing instead small teeth. 



In the present paper the body length measurements are taken 

 from the vertex to the apex of the subgenital plate in both sexes. 

 The ovipositor length is taken from the ventral apex of the basal 

 plica to the apex of the ovipositor. 



We have had before us the types of curvicauda horeaUs, stn'gata, 

 hetnidadyla, furcata furcifera, rmgulata and cuneata; all of which, 

 excepting cuneata, are in the Philadelphia collections. We have 

 corrected all of the erroneous determinations for the present 

 genus which we have made in the past and also the evident 

 mistakes which have been made by other authors, where it has been 

 possible for us to do so. Under each species the synoiwmy alone 

 is given, except in the case of curvicauda laticauda, where all 

 previous correct references are given, and in furcata furcifera and 

 paronae, where it has been thought best to give all previous 

 references which apply to these previously little l-aiown species. 

 In the specific treatment here no description of previoush' de- 

 scribed species are given, but an effort is made in everj' case to 

 emphasize the most important characters of the species. We 

 have not recorded here any material which has been previously 

 correctly recorded. We have examined nearly 2000 specimens, 

 while the number of individuals here listed is 1139. 



Key to the Males of the Genus Scudderia 



A. Disto-dorsal abdominal segment subtriangular in outline with no me- 

 dian produced pistillate process. Subgenital plate not compressed 

 distad. Cerci relatively long, not as strongly incurved distad with 

 distal portion not, or but weakly, enlarged. 

 B. Sides of disto-dorsal abdominal segment decidedly bisinuate, convex, 

 and immediate apex truncate and subangulate excavate, segment 

 elsewhere simple. Cerci gently arcuate throughout with apex not 

 enlarged. Tegmina broad, coriaceous and dull, with heavy veinlets. 



septentrionalis (Serville) 

 BB. Sides of disto-dorsal abdominal segment weakly concave distad and 

 apex bifid, V-emarginate, segment elsewhere complex. Cerci gently 

 arcuate to apex which suddenly bent inward and weakly swollen, 

 though not nearly as much so as in the majority of the species of the 

 genus. Tegmina narrow, rather glossy, with very weak veinlets. 



hemidactyla new species 



