NORTH AMKRICAN HOMOPTERA. 65 



the genital pieces in both sexes. The ornamentation here is quite 

 constant for each species, and is frequently of much value in their 

 determination. 



The following synoptical table of our species is entirely artificial, 

 but taken in connection with the accompanying figures of the genital 

 pieces, will, it is hoped, lead to the ready determination of the species. 



Head as wide as, or wider than, the pronotiini o 



Head considerably narrower than the pronotuiu, disc of the vertex not'yra- 

 pressed; clypeus large, spatulate, its base arcuated, and its apex trun- 

 cated or even excavated 



2.-Vertex very short and sloping, confused with the front on the rounded 



anterior edge, front very broad 1. latifrons 



Vertex horizontal, or nearly so; generally distin,ttlv longer on the middle 

 than next the eye, differentiated from the front by an obtuse or acute 

 edge, disc transversely impressed ., 



3.-Vertex short, but little longer on the middle than' nix't 'ihee've'edee ob' 

 tuse 



Vertex longer, distinctly longer on the middle than next the eye"; disc'de- 



pressed, anterior edge acute or subacute " ' jq 



4.-Very small (4 mm.), fulvous; elytra fulvous-brown, closeiy'dotted "with 

 darker, and crossed by three irregular bands of small white dots. 



T , . . 2. IJhleri. 



Liarger; elytra reticulated, not dotted only 



5.-Fulvous, or tinged with rufous on the pronotnm ; "elytra'f^'i^v,us"minutelv 

 dotted and inscribed, crossed by a broad white band before the middle 



and an obscurer one near the apex 3 strobi 



Elytra not clearly transversely banded 



6.— General color white or cinereous, sparsely inscribed. 



4 <-iiiereusand5 pallidiis. 



General color fulvous, testaceous, or fuscous ; elvtra closelv inscribed 7 



7.-General color fuscous, especially in the male; elytra very closely in.scribed" 



with but one or two costal spots ; in the male fulvous-brown " with -i fow 



scattering white dots «. f.isHpo.mis. 



General color testaceous or fulvous; elytra white, more or less closelv in- 

 scribed with brown and clouded with fulvous-brown " g 



8.-Color testaceous, sometimes tinged with fulvous; quite unif(H-nVl'v i'rrorate 



and inscribed 



Head, pronotum, and scutelhnn fulvous-yellow, obscurch-ir.orate- elytra 

 white, rather closely inscribed and with about two clearer bands indi- 



„ . ""^^^'l •, 10. rulTi<lor!«..iu var. 



J.— Insect attenuated posteriorly by the apical narrowing of the elytra. 



7. irroratiisand 8. triiiK-atiis. 



Insect broader behind, the elytra not narrowed apically... 9 iiK-isii.s 



lO.-Elytra closely dotted, not reticulated, but with some of the dots •,rr,„.^,.d 



in irregular lines „. pn..ctiscri„l,;s. 



Elytra reticulated * 



11.— Size medium (about 6 mm.) ,' 



Size large (7-8i mm.), apex of the vertex usually quite strongly reflexed"l3. 



TRANS. AM. ENT. 80C. XIX. (9) ^.^^^^ jgpo 



