246 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57. 



Family CERCOPIDAE. 



CERCOPIS (sens. latiss.) CEPHALENUS, new species. 



Plate 34, fig. 2. 



Length to tip of tegmina about 12 mm.; tegmina 9 mm. long 

 and about 2.7 mm. broad; head about 3.5 mm. wide, the inner 

 corners of eyes 2 nmi. apart; clypeus about 2 mm. long, each side 

 with about 12 transverse ridges, all strong; scutellura about 2 mm. 

 long. Head dark fuscous; tegmina rather pale, with the lower 

 margin and base broadly pale brown; the middle of the costa with 

 ;a pale brown longitudinal band, followed by a pale spot, after 

 which (beginning 3.2 mm. from apex) is a broad marginal band, 

 about 1 mna. broad, extending to apex. The venation can not be 

 clearly made out, but there is no strong reticulation in the apical 

 field. The preservation of the ventral side of the head is remark- 

 ble, showing the ridged clypeus (the two sides separated in the 

 middle), the orbits, the narrow submentum and the broad mentum.. 

 Compared with C. astrida Scudder, from the Green River shales of 



Wyoming, this has the tegmina much 

 narrower apically, and also differs in the 

 markings. 



Fig. 4.— cicadella scuddeei. Teg- Type. — Eoccne shales ; back of house 

 ^^''- at Smith's Ranch, "shale of Green River 



formation with thin beds oil-shale interbedded." Colorado, Aug. 7, 

 1917. (S. E. Winchester and H. R. Bennett, 17-3.) 

 Eohtype.—Cait. No. 66564, U.S.N.M. 



Family CICADELLIDAE (JASSIDAE authors). 



CICADELLA (sens, lat.) SCUDDERI, new species. 



Plate 33, fig. 8. 



Tegmen about 6 mm. long and 1.5 broad, formed as in Cicadella; 

 venation as shown in the figure. About the basal 1.4 mm. is opaque 

 and pure black; the rest is dilute fuscous with dusky veins, the 

 region just beyond the black suffusedly paler. 



Type.— v. S.G.S. 113. Roan Mountain, Colorado (Scudder). 



Holotype.—Csit. No. 66565, U.S.N.M. Very easily recognized 

 by the black basal area. 



ERYTHRONEURA EOCENICA, new species. 



Plate 33, fig. 9. 



Body and tegmina each 4 mm. long, formed as in modern species; 

 head dark fuscous, obtuse anteriorly; eyes further apart than the 

 diameter of one, but somewhat closer than is the usual modern 

 forms; thorax fuscous; scutellum palhd with two large black 



