HIPPISCUS. 147 



d. Metazona with two pairs of distinct lateral rugae parallel 

 to the hind margin ; basal discoidal field of the tegmina, 

 including the ulnar area, broadly maculate, the apical 

 half multimaculate ; ulnar taenia of the hind wings 

 ending far short of the base, the intermediate space 

 filled with closely crowded cross-veins ; veins at the end 

 of the humeral field more or less laterally stained with 

 blackish-fuscous at the cross-veins, rarely absent ... 7. saussurei, Scudd. 

 dd. Metazona without lateral oblique rugae ; basal discoidal 

 field of the tegmina, and especially the ulnar area, 

 almost or quite immaculate, the apical half pauci- 

 maculate; ulnar taenia almost reaching the base, the 

 cross-veins next the base not closely crowded ; veins at 



the end of the humeral field immaculate 8. tuberculatus, Pal. Beauv. 



bb. At the point where the scutellum of the vertex and the frontal 

 costa meet, between the apices of the lateral foveolae, a 

 distinct sunken transversely biareolate field on the frontal 

 fastigium easily distinguished, both from the vertical scutel- 

 lum and the frontal costa. Posterior sulcus of the prozona 

 terminating on the typical sulcus in two forks, one at the 

 lateral borders of the normal discal scutellum, the other, by 

 deeply cutting the lateral walls of the scutellum, close to the 

 median line. Median carina of the metazona posteriorly 

 more or less subobsolete in the ? . Markings of the 

 tegmina not distinctly pantherine. Mesosternal lobes 

 separated by a truncate, but distinctly wedge-shaped, 

 median piece, the posterior corners of the lobes being very 



broadly rounded. (Sticthippus.) [9. californicus, Scudd.] 



AA. Antennae of the S attenuate or arcuate, in dried specimens 



often partly coiled, at the extremity ; median carina of the 



pronotum intersected by two sulci and generally obliterated 



between them, but sometimes indicating the anterior sulcus 



only by sinuation ; posterior femora generally less dilated, the 



inferior border less arcuate. (Xanthippus.) 



b. Antennae of the S usually as long as the. hind femora, 



gradually attenuated apically for at least one-fifth their 



length, curled, cochleate, or hooked at the tip when dry. 



Tegmina distinctly pantherine in markings ; occasionally 



obscured (in variation) by obsolescence; intercalary vein 



arcuate, approaching at least twice as close to the median 



at its apex as near its base. The fuscous transverse band 



of the wings so far removed from the apex as to leave a 



vitreous area, especially in the ? , covering four marginal 



lobes or even more. Pronotal carina, with rare exceptions, 



Uu2 



