HEMIPTEKA— HETEROPTERA— PENTATOMID.E. 461 



1. POLIOSCHISTUS LIGATUS. 

 PI. 28, Fig. 7. 



Head distinctly, rather densely, and not very coarsely punctate. 

 Thorax much more coarsely g-ranulate. Scutellum feintly and rather 

 coarsely punctate. Hemelytra less than twice as long- as the scutellum, the 

 punctuation of the corium rather delicate, the puncta^ being usually sep- 

 arated ■ by much more than their own diameter. Whole body uniformly 

 blackish griseous, the membrane of hemelytra infumated. 



Length of body, ll"™; hemelytra, 7.5"""; scutellum, 4"""; breadth of 

 thorax at base, 5.25"™ ; at prominences, 6.75""". 



Florissant. One specimen, No. 2856. 



2. POLIOSCHISTUS LAPIDARIUS. 

 PI. 28, Fig. 10. 



Of this species, evidently nearly related to the last, only the scutellum 

 and one of the hemelytra are preserved. The scutellum is heavily and 

 coarsely punctate, scarcely shorter than broad, apically angulate, with 

 straight sides. The hemelytra are more than twice as long as the scutel- 

 lum, the punctuation of the corium much less coarse but distinct and deep, 

 the punctfe separated usually by only so much as or very little more than 

 their own diameter. The scutellum is blackish griseous, the corium dark 

 testaceous, the membrane distinctly infumated. It is a larger species than 

 the last. 



Length of hemelytra, 10™™ ; scutellum, 4.6™"'. 



Florissant. One specimen, No. 1112. 



7. PENTATOMITES gen. nov. (Pentatoma nom. gen.). 



This name is proposed for an obscure form of Pentatomidae, which can 

 not be placed with any of the others, and which is too incomplete to char- 

 acterize accurately. The head is nearly half as broad as the base of the 

 thorax, with prominent eyes, but the front too broken to determine anything 

 about it. Thorax slightly more than half as long as the basal margin, the 

 sides produced into broad rounded lobes, which increase the width of the 

 thorax by fully one-half ; in front of the widest expansion the sides are 



