286 TERTIARY INSECTS OF NORTH AMERICA. 



rida, to which the insect appears to belong. The genus is now confined to 

 warm countries, but is found in both worlds. Heer compares the Oeningen 

 fossil to a species found living in Georgia. 



DiCTYOPHAKA BOUVEI. 

 PI. 21, Fig. 16, 



A pair of specimens, both seen upon a side view, which appear to 

 belong together. Head not protuberant in front of the eyes, well rounded. 

 Rostrum reaching to the base of the posterior legs ; it is poorly represented 

 on the plate in a too curved line. Dorsum of thorax well arched. Legs 

 moderately long and of medium stoutness. Tegmina four times as long as 

 broad, surpassing a little the length of the body, rather slender and sub- 

 equal, the apex subacute, obliquely subtruncate below. Wings ample, the 

 veins of the anal area divergent, arcuate, apically distant, the outermost, 

 falling on the border at the middle of the apical half of the wing, narrowly 

 and very deeply forked. 



Length of body, 14""" ; height of same, ^S""" ; length of tegmina, 12'"'° ; 

 breadth of same, S'""" ; length of rostrum, 4.5"°™. 



Named for the Boston geologist, Thomas T. Bouvd, Esq. 



Florissant. Two specimens, Nos. 126, 4348. 



Subfamilj- CIXTIDA Stal. 



About a third of the fossil Fulgoridai of Europe have been referred to 

 this subfamily. They are all from amber and are considered as species of 

 Cixius. To this we can now add from American rocks twelve species of at 

 least five genera, three of them, Oliarites, DIaplegma, and Florissantia, 

 regarded as extinct types. They all belong in the vicinity of Cixius and 

 Oliarus, and one of them, Diaplegma, has as many as seven species. The 

 modern species of this group appear to be world wide in distribution. 



CIXIUS Latreille. 



To this genus as typical of the subfamil}' only two forms are here 

 placed, which can hardly belong in the same generic group. Many fossil 

 species are known in amber, but none from the rocks have before been 

 referred here. Both the sjiecies here described and figured are very imper- 

 fect. 



