HEMIPTERA— HETEUOPTERA— PENTATOMIDJ-:. 459 



4. CACOSCHISTUS gen. nov. (««;ro?, gxiOt6?). 



Closely related to MatjBOSchistus, from which it ditiers mainly in the 

 structure of the head, which is broader, witli a less prominent front : it is 

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

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

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

 longer than the intraocular space. "^I'horax 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 ang-les well rounded bv the arcuation of the sides and not at 

 all 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. Scutellum triangular, with straight 

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

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

 slender (for this group) with parallel sides. 



A single species is known. 



Cacoschistus maceriatus. 



PI. 28, Fig. 2. 



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

 and irregularly granulate ; the scutellum and corinm of hemelytra similarlj- 

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

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

 blackish griseous. 



Length, including hemelytra, 14.75""" ; breadth, 6""°. 



Florissant. One specimen, Nos. 13318 and 13319. 



5. MAT^OSCHISTUS gen. nov. (fxaraw?, axiCrS?). 



Of the general form of Euschistus but far more elongate, with parallel 

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

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

 the typical Mecocephala, the tip being, however, more broadly rounded, the 

 whole head twice as long as its intraocular breadth ; tjdum appai-ently a 

 little longer than the juga; first joint of antenna; not nearly attaining the 



