MCNEILL REVISION OF THE TRUXALIN.E OF NORTH AMERICA. 259 



to Mr. Coquillett its stridulation is as loud and sustained as that of 

 some of the Cicada. 



XXV. STENOBOTHRUS, Fisch. Fig. 25. 



" Vertex triangular, obtuse,* with the foveola;, which are visible from 

 above, narrow, oblong, rhomboidal. Antenna filiform. Frontal cos- 

 ta convex. Pronotum with the disk almost plain, the median carina 

 distinct and cut by the principal sulcus only, and the lateral carinse 

 straight or more or less arcuate or sinuate. The lateral lobes are higher 

 than long,! '^^'ith the lower angles somewhat obtuse. Tegmina fully 

 developed, rarely abortive, with the mediastine area more or less ex- 

 tended, either narrow throughout or widened at the base, and some- 

 times including an adventitious vein. The scapular area is filled with 

 oblique transverse veins and in the male is dilated. The radial vein 

 is composed of three principal branches; there is no intercalary vein. 

 The ulnar vein is composed of two branches which sometimes unite 

 again before the middle, the dividing vein is straight, and the plicate 

 vein is free or united with the dividing. The wings are fully devel- 

 oped or rarely abortive, not fenestrated, rarely wanting. The posterior 

 femora are frequently mottled, very rarely distinctly spotted. The 

 posterior tibia; are frequently dull testaceous, rarely red. The sterinun 

 is rather broad, with the mesosternal lobes widely separated and the 

 metas-ternal lobes distant. The first abdominal segment is furnished 

 with a closed tympanum. The anal segment is longitudinally sulcate 

 with the supra-anal plate of the male obtusely triangular. The sub- 

 genital plate of the male is recurved with the apex obtuse or acumi- 

 nate. The valves of the ovipositor are short but exerted, and some- 

 times furnished with a lateral basal tooth." 



Sie?wl>ot/irus,Y\?,c\i., 1843. Orth. Europ., 313. 



Stenobothrus , Bruner, 1882. Pro. Europ. Orth., 100. 



Stenobothrus , Bruner, 1893. Rev. Sys. Orth., 122. 



Stenobothrus, Morse, 1896. Psyche, VII, 327, fig. 12. 



In part, Gomphocerus, Stal, 1873. Recen. Orth., 193. 



Gomphocerus, Bolivar, 1876. Orth. de Esp. , 107. 



Chorthippus, Fieb. 



This large European genus is very meagerly represented in this 

 country by only four species, though formerly it served the same use- 



* In Si curtipennis, Harr., the vertex of the male is acute. 



t In St. curtipennis, Harr., the lateral lobes of the pronotum are about equally high and 

 long. 



