HEMIPIEKA— HOMOPTEEA— FLTLGORINA. 293 



OLIARITES gen. no v. (Oliarus). 



This name is proposed for an insect formerly placed by me in Mne- 

 mosyne, one of the Dictyopharida, but which a renewed study seems to 

 show to belono- in the vicinity of Oliarus, among- the Cixiida. The head 

 was apparently not more than half as broad as the tliorax. perhaps much 

 narrower. The thorax was transverse, eqiuil, arcuate, into which the pretty 

 large subtriangular scutellum with its convex base fitted. The tegmina 

 were wholly diaphanous, very greatly surpassing the abdomen, enlarging 

 apically with slight, fine, but smooth and in no respect arenaceous veins, all 

 the longitudinal veins connected near the middle of the wing, but not in a 

 line, with the cross-veins, at or beyond which each of them forked to a 

 greater or less extent, the forks, at least in the upper half of the wing, 

 upcurved on approaching the margin, where they are again forked and 

 united by many cross-veins, so that the wing becomes weakly reticulate 

 shortly before the margin. 



Oliarites terrentula. 

 PI. 7, Fig. 17. 



Mnemosyne terrentula Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 773 (1878). 



A single specimen is preserved, with an indistinct body, broken in 

 front, and the greater part of one of the tegmina. The body is moderately 

 broad ovate, the tip of the abdomen rounded and slig-htly produced. The 

 tegmina are regularly enlarged toward the apfex and rounded at the ex- 

 tremity, not at all truncate ; the interior branch of the radial vein forks near 

 the middle of the wing, and just beyond the first subapical transverse 

 vein ; both its branches fork before they have passed more than half-way to 

 the marginal row of elongate cells. 



Estimated length of body, 6.5"™ ; breadth of same, 2.25°"° ; length of 

 tegmina, 7""" ; breadth of same, 2.25™°' ; their extent beyond the abdomen, 

 2.2"". 



Green River, Wyoming One specimen, No. 31'' (F. C. A. Richardson). 



FLORISSANTIA gen. nov. (Florissant, nom. loc). 



This interesting genus appears to be allied to Cladodiptera, with very 

 neai-ly the same general neuration of the tegmina, but differs strikingly 

 from it in the much narrower head. The head is only half as broad as the 



