HEMIPTERA— IIOMOPTEKA— FULGOKINA. 279 



Hammapteiyx, a new genus from Green River ; and of Flatida, two species 

 of Lithopsis and one of Ficarasites, both new types and from Green River. 

 America is therefore far richer tlian Europe both in the numljer and diver- 

 sity of its fulgorine fauna, but especially in the latter. About half the 

 European species have been referred to Cixius alone, and, as we have seen, 

 Diaplegma, a genus of Cixiida, is the most abundant American type. 



Subfamily FULGORIDA Stal. 



This group, which includes among its members the lantern-fly and 

 other light-giving, or presumably light-giving, insects, has heretofore been 

 found fossil only in amber, three species of Poeocera having been described 

 therein. Now, however, we are able to add from the American rocks a con- 

 siderable number and variety of forms, referred to four different genera, one 

 of them, Nyctophylax, extinct and' composed of large species with recurved 

 snout. 



NYCTOPHYLAX gen. nov. {vvuTocpvXail). 



Large bodied insects, nearly allied to Enchophora. The head pre- 

 sented a recurved process of subequal diameter (as seen from the side) and 

 tolerably stout, exceeding a little the diameter of the head ; it was directed 

 upward and a little backward, not reaching the posterior margin of the head, 

 very bluntly pointed, laterally carinate. Legs short and moderately 

 stout, the hind femora not surpassing the middle of the abdomen, both 

 femora and tibiae apparently carinate or tetraquetral throughout. Tegmina 

 considerably surpassing the abdomen, densely reticulate in the apical fourth 

 only. Type, N. uhleri. 



Tahle of the species of Nyctophylax. 



Larger species (tegmina twenty millimeters in leugtli). Extreme tip of the recurved process of the 

 head separated from the summit of the head by nearly twice its own greatest diameter..!. N. uMeri. 



Smaller species (tegraiua fifteen millimeters in length). Extreme tip of the recurved process of the 

 head separated from the summitof the head by not more than its own greatest diameter. .2. N. vigil. 



1. Nyctophylax uhlerl 

 PI. 19, Fig. 11. 



This is one of the largest of the Hoinoptera known in a fossil state, and 

 from the development of the frontal process was not improbably a noctilu- 

 cous insect. It is preserved on a side view ; the fracture of the stone has 

 removed a portion of the front, but has fortunately left intact the posterior 



