HEMIPTERA— HETEROPTEEA— COEEID.E. 421 



directed equally backward and outward, not pi-operly represented on the 

 plate; the lunder margin slopes backward to aid In forming the spine, 

 immediately the limits of the scutellum are past. On the scutellum the 

 granulations become more or less transverse corrugations, especially toward 

 the apex, but I can detect no scutellar spine. Hemelytra extending a little 

 beyond the abdomen, with the corium and clavus dark brownish fuliginous, 

 rather distantly punctate with white in linear rows ; membrane very pale 

 fuliginous, pallid next the a})ex of the corium. 



Length of body, not including the hemelytra, 5.75"" ; hemelytra, 

 4.5""° ; breadth of thorax, 2.5"". 



Florissant. One specimen, No. 7856. 



3. PARODARMISTUS gen. nov. (Trdpo?, Darmistus, nom. gen.). 



Related to Darmistus St8,l, but differing from it in the length of the 

 last antennal joint, which is no longer than either of the two preceding ; 

 the antennae are scarcely more than half as long as the body ; the basal 

 joint is moderately stout, short, projecting but little beyond the front of 

 the head, the remaining joints subequal, the last very gently and slightly 

 incrassated, but not longer than the second, rarely longer than the third 

 and then but slightly. Head and thorax of subequal length, the head 

 rounded or subquadrate, of about equal length and breadth ; the thorax 

 subquadrate, scarcely narrower at ai)ex than at base, yet never longer than 

 broad. Hemelytra just reaching the end of the abdomen, the two principal 

 veins of the membrane forming a median loop, its apex just before the 

 center of the membrane, and from which radiate at tolerably regular dis- 

 tances six or seven equal or subequal forks. Hind femora slender and 

 smooth, hind tibias delicately spinous. 



Six species occur in the Tertiary shales of America, all from Floris- 

 sant. 



Tabu of the species of Parodarmiatus. 



Thorax about equally granulate throughout. 



Hind femora twice as long as the width of the thoras 1. P. ahscissua. 



Hind feniora less than half as long again as the width of the thorax 2. P. cndiicus. 



Thorax with the posterior lobe very distinctly more coarsely granulate than the anterior. 



Thorax scarcely broader than long ...3. P. colliaus. 



Thorax considerably broader than long. 



Thorax about half as broad again as long. 



Eyes of moderate size, not prominent ; head and thorax subequal in length ..4. P. defectus. 

 Eyes very large and prominent ; head considerably longer than the thorax. 



6. P. exanimaiua. 

 Thorax twice as broad again as long 6. P. inhibitua. 



