317 



tennse and eyes fuscous ; vertex and thorax, with two sanguineous 

 vittee, more or less obsolete. Abdomen black, except the tips of the 

 joints ; tlie last joint almost entirely greenish. Tips of tarsal joints 

 dusky. Elytra, toward the base, subopaque, dull-greenish ; at tip sub- 

 hyaline ; an obscure sanguineous vitta on the anal vein, amd another 

 parallel to it, half-way to the costa, both sometimes obsolete. Wings 

 whitish-subopaque, with the tips of the costal veins fuscous; the cross- 

 vein forming a salient angle, and emitting from its apex an additional 

 vein, as in Typhlocyha (fig. IV.) Length to tip of wings, three-twen- 

 tieths of an inch. 



Chloronewra malefic a (The culprit leaf-hopper.) (n. sp., figs. I. and II.) 

 Greenish or yellowish. Front of head forming a right angle with the 

 apex rounded. Eyes and tips of tarsi fuscous. Elytra subhyaline, with 

 a greenish tinge ; at their extreme tip, cloudy. Wings hyaline, cross- 

 vein simple. Length to tip of wings, one-eighth of an inch. Occurs 

 on apple and pear leaves. Took a pair i?i coitu under bark, early in 

 the spring, in the woods. 



Chloroneura ynaligna. (The malignant leaf-hopper, fig. III.) Differs 

 from the above as follows : — The color is deeper ; the head is almost 

 transverse, its anterior edge forming about half a quadrant ; the elj^tra 

 are subopaque, and deeply tinged with green, and their anal vein attains 

 the cross-vein nearly. 



Eeythroneura. (Fig. VI.) 



To this extensive genus belong Tettigonia obliqua Say, T. basillaris 

 Say, E. vitw Harris, E. vulnerata Fitch, E. vitifex Fitch, and E. tri- 

 cincta Fitch, all of which occur near Rock Island, 111. Also, nineteen 

 undescribed species, .most of them elegantly marked with blood-red or 

 blood-brown, which I have met with in the same locality. I describe 

 only the three following, one on account of its liability to be confused 

 with the two species which infest the apple and pear, and two on ac- 

 count of their infesting the grape-vine. 



Erythroneura australis (n. sp.) Pale yellowish. Head forming a 

 right angle with the apex rounded. Eyes and tips of tarsi fuscous. 

 Elytra subhyaline, with a pale, fuscous dot on the basal side of each of 

 the three inside terminal cells, the two outer dots sometimes obsolete. 

 Wings hyaline. Length to tip of wings, one-eighth inch. Very near 

 Empoa quercius Fitch, but generically distinct. Occurred in Southern 

 Illinois ; a single specimen near Rock Island, 111. 



Erytlironeura ziczac (the zigzag leaf-hopper.) (n. sp.) Pale yel- 

 lowish. Fi'ont of head in a right angle with the apex rounded. Eyes 

 dusky ; ocelli pale ; vertex, with two pale sanguineous vittse, generally 

 subobsolete. Thorax blood-brown, yellowish in front, often with a 

 yellowish vitta; scutel blood-brown, with a yellowish vitta, occasionally 



