HEMIPTERA— HETEROPTERA— COREID^. 4 1 3 



punctate in linear rows. Legs slender, the anterior femora lono-er than the 

 breadth of the body. Abdomen long and rather narrow with straight sides 

 tapering apically. 



Length of body, 7°""; breadth of posterior lobe of thorax, 2.8°"°; 

 abdomen, 2.25™°' ; length of antenna;, 4"". 



Florissant. One specimen, No. 13314. 



2. ACHRESTOCORIS gen. nov. {axprjaro?, uopt?). 



This genus and the following are remarkable for the neuration of the 

 corium of the hemelytra, where an oblique vein runs from the upper apex 

 of the central cell to the costa, in addition to the two other veins running 

 from the extremity of the cell to the membrane, and so inclosing between 

 itself and the upper of these two usual veins a large rhomboidal cell at the 

 apex of the corium. In the present genus the thorax is exceptionally short, 

 being no longer than, if as long as, the small head. The head is subquad- 

 rate, sliffhtlv long^er than broad, less than half as wide as the base of the 

 thorax, not much produced in front of the antennae. Antennae not preserved 

 in any of the specimens. Eyes large and rather prominent, ocelli minute, 

 circular, more than twice as near the eyes as each other, opposite the middle 

 of the posterior half of the eyes. Thorax with truncate base, the sides 

 tapering I'apidly to the narrow apex, the apical margin gently, regularly, 

 and roundly emarginate, tlie whole more than twice as long as broad. 

 Scutellam very large, triangular, broader than long. Corium of hemelytra 

 large, reaching nearly to the tip of the abdomen, which the membrane 

 appears to surpass slightly. Membranal margin straight, very oblique 

 Abdomen large and rather full, half as long again as broad. 



A single species is known. 



ACHRESTOCOEIS CINERARIUS. 

 PL 22, Fig. 1. 



Body robust, but little more than twice as long as broad. Head very 

 finely granulate, intraocular space about half as wide as the length of the 

 head; the color black. Thorax blackish fuscous with coarse and faint 

 punctfe, not very close together; sides with very slight ampliations; rest of 

 the body black or blackish fuscous. Hemelytra fusco-fuliginous with dusky 



