316 



whitish, with a glaucous tinge. Thorax with two transverse dark 

 dots on its anterior submargin. Sternum varied with fuscous. Dor- 

 sum of abdomen, except the extreme tip of each joint, fuscous; ovi- 

 positor unknown ; elytra whitish-subopaque, except at tip. Occurs 

 at Rock Island, 111. 



Empoasca. (n. g.) (Fig. V.) 



Empoasca viridescens (n. sp.) Pale greenish. Front of head form- 

 ing a right angle with the apex rounded off. Eyes and tips of tarsi 

 fusi'ous ; elytra subhyaline, with a faint greenish tinge, the triangular 

 cell not peduncled as it is in fig. V. ; wings hyaline. I met with both 

 sexes in Southern Illinois. A single female, which occurred at Rock 

 Island, 111., varies in being more yellowish than greenish, and in the 

 tip of the ovipositor being fuscous. Length to tip of wings, not quite 

 one-eighth of an inch. 



Empoasca consohrina (n. sp.) Differs from the preceding only in 

 being sometimes yellowish, and in the triangular cell of the elytra be- 

 ing always peduncled. Seven specimens, taken at^ one time near 

 Rock Island, 111., all agree in this particular. Length slightly over 

 one-eighth of an inch. [This is a mere variety of the preceding ; 1 

 have now all the intermediate grades. B. d. W., 1863.] 



Ernpoasca obtusa (n. sp.) Pale grass-green. Front of head form- 

 ing a very obtuse angle, with the apex rounded off. Each ocellus 

 surrounded by a fuscous spot. Eyes, and tips of the tarsal joints, 

 fuscous ; elytra greenish-subhyaline ; tips hyaline. Triangular cell 

 peduncled. Wings hyaline. Length to tip of wings, three-sixteenths 

 of an inch. 



Empoa. (Elytra, fig. V. ; wings, fig. VI.) 



Two species, one found on pine, the other on oak, are described by 

 Dr. Fitch, in his Catalogue of New York Homoptera, and referred to 

 this genus. As he says nothing of the neuration of the wings, they 

 may possibly belong to Empoasca. Empoa rosoi and E. faboi Harris, 

 are in the same predicament. 



Empoa albicans (n. sp.) Whitish. Eyes fuscous. Two or three of 

 the basal and of the terminal joints of abdomen, fuscous at tip; ovipos- 

 itor black ; elytra subhyaline, at tip a little cloudy ; triangular cell pe- 

 duncled ; apex of vein which forms the inner cell not attaining half 

 the distance to the apex of elytrum ; wings hyaline. Length to tip 

 of wings, nearly one-fifth of an inch. 



Chloroneura. (n. g.) (Elytra, fig. VI. ; wings, fig. V.) 



Chloroneura abnormis (n. sp.) Pale dull-green. Front of head 

 forming an angle of about eighty degrees, with the apex rounded; an- 



