220 OETHOPTERA. 



159 (142). Tegmina fully developed or abbreviate, never much, 



if any, shorter than the pronotum ; hind margin of 

 the pronotum distinctly angulate; fore and middle 

 femora scarcely more gibbous in the male than in the 

 female (except in some species of Campy lacant ha). 



160 (161). Tegmina fully developed, disk of the pronotum almost 



flat, the lateral lobes nearly at right angles to it, the 

 posterior margin rectangulate or subrectangulate ; 

 prosternal spine quadrate, appressed, broadly truncate . AidExMona, Brunner. 



161 (160). Tegmina abbreviated; disk of the pronotum tectiform, 



the posterior margin obtusangulate ; prosternal spine 

 more or less conical and acuminate. Furcula of 

 male reduced to slight, scarcely projecting lobes ; 

 surface of body rather densely pilose; prosternal 

 spine more or less retrorse Campylacantha, Scudder. 



162 (129). Lateral margins of the last ventral segment of the male 



abdomen suddenly ampliate to a considerable degree 

 at the base ; or if not to a considerable degree, then 

 the entire margin is rather strongly convex or 

 sinuate. 



163 (166). Last ventral segment of the male abdomen furnished 



with a distinct subapical tubercle, but not otherwise 

 tumescent. 



164 (165). Body relatively slender and compressed, not much elon- 



gated at the metathorax, particularly in the male; 

 hind femora long and slender ; the apical tubercle 

 of the male abdomen prominent ; prevailing colour of 

 insect green Hesperotettix, Scudder. 



165 (164). Body relatively short and stout, considerably enlarged 



at the metathorax, even in the male; hind femora 

 relatively short and robust ; the apical tubercle of 

 male abdomen not prominent; prevailing colours 

 of insect testaceous and olive ^Eoloplus, Scudder. 



166 (163). Last ventral segment of the male abdomen without a 



distinct subapical tubercle, but often apically pro- 

 longed or tumescent. 



167 (176). Tegmina always present; sides of the first abdominal 



segment furnished with a distinct tympanum. 



168 (173). Inferior genicular lobe of the hind femora with at least 



a darker basal spot or transverse band ; cerci of the 

 male variable, often enlarging apically. 



169 (172). Dorsum of the pronotum rarely or never twice as long 



as the average breadth, generally only half as long 

 again, even in the male, usually constricted more or 



