4-K) Annals oi the Carnegie Museum. 



g. Lateral foveolae of the vertex sublanceolate. Pro- 



notum deplanate above Isonyx Rehn. 



gg. Lateral foveolae of the vertex quadrate. Prono- 



tum rounded above Borellia Rehn. 



/'". Size of inserts smaller ( \ 12 nun., 9, 16 mm.). Form 



more graceful Stereotettix Rehn. 



bb. Inner apical spurs of hind tibiae very unequal in length. Antennas of 

 neither sex never nearly as long as the hind femora, 

 r. Lateral foveolae of the vertex well developed, varying from nearly 

 square to sublinear. 

 (/. Pronotum with the lateral carina- very inconspicuous or missing, 

 the lateral lobes not ridged. 

 e. Hind tibia* with seven spines externally, the inner spur quite 

 straight, much longer than its mate and very similar in form 

 to that of Scyllina. Foveola- three times as long as wide. 



Alota gen. no v. 



ee. Hind tibiae eight-spined externally, the inner spur evenly 



curved and tapering, about a third longer than its mate. 



Foveolae nearly square Pelloprdon Brunei - . 



dd. Pronotum with well developed lateral carina? and on the lateral 

 lobes raised ridges. 

 e. Tegmina and wings more or less abbreviated. Fastigium of 

 the vertex provided with a faint median longitudinal 



carina Mcloscirtus Bruner. 



ee. Tegmina and wings fully developed. Fastigium of the vei tex 



not carinated longitudinally Stira pleura Scudder. 



cc. Lateral foveola of the vertex obscure, linear. 



d. Larger. Lateral carina; of the pronotum more or less interrupted 

 between the anterior and posterior sulci; diverging strongly 



both anteriorly and posteriorly Scyllina Stal. 



dd. Smaller. Lateral carina- but little or not at all interrupted and 

 but little divergent Euplectroteltix Brunei'. 1 



Genus Truxalis Fabricius. 



Truxalis Fabricius, Syst. Ent., p. 279 (1775); Stal, Recens. ( hrthopt., pp. 92, 104 

 (1873), and other-. 



31. Truxalis brevicornis (Linnaeus). 



Gryllus brevicornis Linn.eus, Cent. Ins., Part, p. 15 (1763). 

 Truxalis brevicornis Fabricius, Syst. Ent., p. 279 (1775). 



Other synonymy is given in a former paper by me (Annals Cak- 

 NEGIE Ml s., VIII, p. 9). 



1 The genus Tristira Brunner possibly belongs to this division and somewhere 

 near Meloscirtus. This, however, is only a surmise, as no specimen is at hand, 

 and the description does not mention the spur characters. 



