No. 34.] HEMIPTERA OF CONNECTICUT: CXCADELLIDAE. 85 



Subfamily Jassinae. 



Jassides. 



The great number of leafhoppers with the ocelli located on the 

 margin of the vertex where such is definite or on that portion of 

 the head between the vertex and front when there is no perceptible 

 limit to either, are included in this family. 



Key to Tribes. 



1. Elytral nervures branching on the disc, ocelli on or near margin 



of vertex. ( Fig. 8,6.) 2 



Elytral nervures not branching en the disc, branched at base, 

 ocelli often wanting. (Fig. 8, 5.) ........... .Typhlocybini, p. 147 



2. Ocelli on vertex near margin, or between vertex and front, and 



remote from the eyes. (Fig. 8, 3.) Acucephalini, p. 85 



Ocelli on margin between vertex and front, usually very close to 

 eyes. (Fig. 8, 2.) Jassini, p. 89 



Tribe ACUCEPHALINI. 



Vertex and face distinctly separated, generally by a well-defined 

 margin, the ocelli on or adjoining margin, or margin being absent, 

 on rounded portion between front and vertex. Appendix very 

 narrow or wanting. 



Key to Genera. 



1. Vertex rather flat with acute edge forming definite limitations of 



vertex and front. (Fig. 8, 4.) 2 



Vertex sloping and rounding to front, without definite margin. 

 (Fig. 8, 3.) • 3 



2. Vertex transversely striate in front, elytra narrowly rounded at 



apex Stroggylocephalus, p. 85 



Vertex not transversely striate in front, more broadly rounded at 

 apex. (Fig. 8, 4.) .Acucephalus, p. 86 



3. Pronotum gently rounded, not produced to anterior margin of 



eyes, vertex moderately long, well rounded. (Fig. 8, 3a, b.) .. 



Xestocephalus, p. 87 

 Pronotum strongly rounded, produced almost half its length 

 beyond anterior margin of eyes. Head very short, acutely 

 conical. (Fig. 8,- 1.) .Nionia, p. 89 



Stroggylocephalus Flor. 



Vertex produced, obtusely angled, transversely striate in front. 

 Margin thin, foliaceous, ocelli close to front margin. Elytra cori- 

 aceous, narrowly rounded at apex, appendix wanting. 

 S. agrestis (Fallen). Cicada agrestis Fallen. Tettigonia mixta 

 Say. 



Acta Holm, xxvii, 23, 1806. 



Grayish yellow to brown, frons black finely irrorate with pale 

 brown. Vertex striate in front, smooth at base. Pronotum trans- 

 versely striate, brownish. Elytra with inner margins, bars and 



