La\vso.\ : Membracid^ of Kansas. 51 



CC. Base of corium with two veins. 



D. Apical cell of te^;inina transverse. Vanduzea. 



DD. Apical cell of tegmina triangular. 



E. Dorsum strongly elevated, with deep median notch. 



Entylia. 



EE. Dorsum slightly elevated, with weak median de- 

 pression. Publilia. 



Genus Ceresa Amyot & Serville. 



To this genus belong our commonest species, most of which are 

 green and all of which are at once recognized by their prominent 

 suprahumeral horns. 



The seven species known to occur in Kansas may be separated by 

 the following key: 



KEY TO SPECIES. 



A. Species brown. 



B. Species larger and very hairy; suprahumerals not recurved; one 

 white band on j)osterior process. diceros. 



BB. Species smaller, with few hairs; suprahumerals recurved; two white 

 bands on posterior process. albescens. 



AA. Species green. 



B. Dorsal crest marked with brown or reddish. 



C. Suprahumerals short and slightly recur\ed. palmeri. 



CC. Suprahumerals longer and strongly recurved. con-stans. 



BB. Dorsal crest concolorous. 



C. Species small, 7-8 mm. long. 



D. Very hairy species. borecdis. 



DD. Sparsely haired species. brevicornis. 



CC. Species large, 8-10 mm. long. 



D. Suprahumerals long, sloping upward and recurved; cly- 

 peus much produced beyond vertex. taurina. 



DD. Suprahumerals stout, nearly straight, clypeus short. 



bubalus. 

 Ceresa diceros (Say). 



(PI. Ill, figs. ], 2.) 



Membracis diceros Say, Long's 2nd E.xped., ii, p. 299, 1824; Compl. Writ., i, p. 199. 



Smilia diceros Germar, Silb. Rev. Ent., iii, p. 237, 1835. 



Ceresa postfasciata Amyot & Serville, Hem., p. 540, pi. 10, fig. 3, 1843. 



Ceresa diceros Fairmaire, Ann. Soc. Ent. Fr., ser. 2, iv, i). 285, 184fi. 



Ceresa vitidalis Buckton, Monog. Membr., p. 172, pi. 36, figs. 3-3b, 1903. 



Funkhouser gives the following technical description: 



Dark brown with trans\erse bands of yellowish white; suprahumeral horns 

 stout and blunt; posterior process decurved; tegmina smoky hj'aline. 



Head broader than long, sculptured, basal part strongly and smoothly 

 curved, front surface light yellow faintly marked with brown, faintly longi- 

 tudinally ridged, very slightly or not at all punctate or pubescent ; eyes 

 prominent, extending beyond adjoining lateral margin or pronotum; ocelli 

 shining, transparent, nearer to each other than to the eyes; sclerites of front 



