462 TERTIARY INSECTS OF NORTH AMERICA. 



arcuate, convex, merging- into the broadly rounded apical margin, which is 

 narrowly and slighth" emarginate for the reception of the head. Scutelluni 

 equiangular, with straight (and not, as given on the plate, convex) sides, 

 longer than the thorax, the apex bluntly angular and in no way produced, 

 reaching less than half-way to the tip of the abdomen. 

 A single species is known. 



Pentatomites foliarum. 



PI. 28, Fig. 1. 



A single specimen with partly spread hemelytra, both extremities 

 broken, is the only i-epresentative at hand of this species, which differs con- 

 siderably from all others. The head is rather finely and very sparsely 

 punctate. The thorax and scutellum, and especially the latter, are mucli 

 more coarsely but quite as sparsely punctate, while the punctuation of the 

 corium of the hemelytra is between the two but rather less sparse ; the 

 membranal suture of the hemelytra is rigidly straight and marked by a 

 dark line. The body is blackish griseous, much more conspicuous on the 

 scutellum and disk of tliorax than elsewhere, the corium of hemelytra 

 merely infuscated, the membrane faintly infumate. 



Length of fragment, 15""; probably length of body, 16.5""": breadth 

 of thorax, 0""" : abdomen, 6.5°"". 



Florissant. One specimen, No. 7929 



8. TIROSCHISTUS gen. nov. {Telpco, axtard?). 



Head rounded, broader than long, with remarkably little projection in 

 advance of the eyes ; antennas about twice as long as the head and thorax 

 together, the first joint short, barely surpassing, if surpassing, tJie head, the 

 second longest and about as long as the width of the head, the third and 

 fourth equal and eacli about three-fourtlis the length of the second, all 

 slender beyond the basal joint, the fifth unknown. Thorax transverse and 

 semilunar, only slightly broader in advance of, than at, the base at the 

 lateral angulation, wliich is not at all prominent. Scutellum large, triangu- 

 lar, simple, slightly longer than broad, about as long as head and thorax 

 together, but reaching only half-way to the tip of the abdomen. 



A single species is known. 



