Ill \liri BRA HE! EttOPTKRA PENTATOMIDJi. 



4. CACOSi 'JUSTUS gen. nov. (jca>tot, 



('losely related to Mataeoschistus, from which it differs mainly in the 

 structure of the head, which is broader, with a lesii prominent trout : it is 

 more than half as broad as the thorax, the eyes very large, the portion in 

 s front of them scarcely tapering', not so long as the eyes, broadly rounded 

 apically, the tvhun and juga of equal length, the whole head but little 

 longer than the intraocular space. Thorax in the middle considerably 

 longer than the head, two and a half times as broad as its middle length. 

 tapering from the very base, at first slightly, afterwards rapidly, with the 

 outer anterior angles well rounded by the arcnation of the sides ami not at 

 ;ill prominent, and posteriorly with no lateral projection whatever, the apical 

 border rather deeply emarginate for the reception of the head, the middle 

 half of the emargination hardly arcuate. Scntellum triangular, with straight 

 sides and an angulate, in no way produced apex, which barely reaches half- 

 way to the tip of the abdomen, which the hemelytra surpass. Body rather 

 slender (for this group) with parallel sides. 



A single species is known. 



CACOSCHISTTS MACEKIATUS. 



1 1. L'S, Fig. '2. 



The head appears to be smooth ; the thorax rather coarsely, very sparsely, 

 and irregularly granulate ; the scutellum and coriiim of hemelytra similarly 

 but more closely and less irregularly granulate ; coriiim of hemelytra long, 

 the membrane hardly occupying more than the apical fourth. Whole body 

 blackish griseous. 



Length, including hemelytra, 14.7. r > nini ; breadth, 6 m " 

 Florissant. One specimen, Nos. 1331S and 13319. 



f>. MAT.KOSCHISTUS gen. nov. (^ar/o?, o- /t o T n?) 



( >f the general form of Kuschistus but far more elongate, with parallel 

 sides,' probably not far removed from Meeocephala. Head broad at base, 

 the eyes being large; beyond tapering and prolonged, almost exactly as in 

 tin- typical Meeocephala, the tip being, however, more broadly rounded, tin- 

 whole head twice as long as its intraocular breadth: tylum apparently a 

 little lunger than the |ii'_M : lirst joint of antenna- not nearlv attaining the 



