HEMIPTERA— HETBROPTERA— LYG.^^lD.^i. 379 



Florissant. Seven specimens, Nos. 3601, 3739, 4886, 11522, 11549, 

 13153, and from tlie Princeton Collection 1.828. 



3. Nysius tritus. 

 PI. 23, Fig. 20. 



]J?ody slei^der, fully three times as long- as broad ; the head and thorax 

 black, the abdomen blackish fuscous ; corium and clavus of hemelytra 

 blackish brown with a large, triangular, clear, pallid spot occupying the 

 basal half or more of the corium, and also another smaller, triangular, pallid 

 spot at its extreme apex ; membrane fuliginous. Head subrotund, broader 

 than the apex of the thorax, apparently broadly angulate in front, the sur- 

 face smooth. The antenna? half as long as the body, the apical joint slightly 

 incrassated. Thorax tapering rapidly and regularly from base to apex, the 

 apical hardly more than half as long as the basal margin, both truncate; the 

 surface heavily punctate, as is also that of the scutellum ; veins of the 

 hemelytra also punctate. 



Length of body, 4 3™™; antennje, 2.15°'"; l)readth, l.So""". 



Florissant. Two specimens, Nos. 6142, 12465. 



4. Nysius terr.e. 

 PI. 23, Pig. 31. 



Body moderately slender, rendered less so by its slightly oval shape : 

 head and thorax l)lackish brown, the abdomen a little paler; legs and 

 antennae dark testaceous. Head small, distinctly broader than long, rounded, 

 with the eyes narrower than the apex of the thorax ; surface smooth. 

 AntennjB half as long as the body, the basal joint projecting but little be- 

 yond the front of the head, the apical slightly incrassated and fully as long 

 as the penultimate joint. Thorax tapering gently from base to apex, the 

 apical fully two-thirds as long as the basal margin, both truncate ; the sides 

 hardl}- ampliated ; surface heavily punctate, as is also the scutellum. 

 Corium of hemelytra reaching nearly the middle of the apical half of the 

 abdomen, dark fuscous, with a very large, rounded, blackish fuscous spot 

 in the middle of the apical margin ; the membrane apparently clear. 



Length of body, 4.1™"' ; antennae, 2™™ ; breadth of base of thorax, 



Florissant. Two specimens, Nos. 4606, 7064. 



