TRIBE I. — GALEATINI. 451 



KEY TO EASTERN TRIBES OF SUBFAMILY TING1N.E. 



a. Front part of pronotum elevated into a more or less inflated or 

 bulbous hood ; paranota and costal margins of elytra expanded 

 and projected much beyond the sides of body (fig. 97, b, d) . 

 b. Elytra for the most part widely reticulate and membranous, the 

 cells usually hyaline; discoidal area of elytra confined to the 

 basal half; osteolar opening (metasternal orifice) distinct, rare- 

 ly (Galeatus and Dictyonota) wanting (figs. 97, d, 98). 



Tribe I. Galeatini, p. 451. 

 66. Elytra closely reticulated, the cells, except those of costal area, 

 small and mostly subopaque; discoidal area reaching apical third 

 or fourth; osteolar openings absent (fig. 111). 



Tribe II. Acalyptini, p. 479. 

 aa. Front part of pronotum without an inflated hood, its median carina 

 often slightly elevated to form a small hood-like elevation; elytra 

 closely reticulate and for the most part coriaceous and opaque; 

 paranota and costal margins of elytra much less expanded, but 

 little projecting beyond the sides of body (fig. 116). 



Tribe III. Physatocheilini, p. 482. 



Tribe I. GALEATINI tribus novum. 



In this tribe, which includes our most common and best 

 known species of lace-bugs, the reticulation of the upper sur- 

 face is best developed, the areolae or cells at times being very 

 large and transparent. The hood varies much in form and 

 size, being usually large and spherical behind, the front por- 

 tion usually entirely covering the head, but often compressed 

 and reaching only to vertex (fig. 97, a) ; side margins of pro- 

 notum (known as paranota) as well as those of the elytra, flat- 

 tened and extending much beyond sides of body ; backward 

 prolongation of pronotum usually tricarinate. Ten of our east- 

 ern genera are included in the tribe. 



KEY TO EASTERN GENERA OF TRIBE GALEATINI. 



a. Pronotal hood large, bulbous, cleft behind to receive the front por- 

 tion of a compressed elevation formed by the two greatly enlarged 

 hemispherical lateral carina?; areola? of elytra very large, rectan- 

 gular, vitreous (fig. 98). I. Galeatus, p. 452. 

 aa. Hood not cleft behind ; lateral carina? of pronotum not expanded and 

 elevated; areolae much smaller. 

 6. Pronotal hood large, extending completely over the head; front 

 portion of median carina of pronotum more elevated than the 

 lateral carina?. 

 c. Hood with front portion triangular and compressed, hind portion 

 usually bulbous; basal third of each elytron with a tumid ele- 

 vation. 



