392 
ANNUAL REPORT OF NEW-YORK 
GRAPH. LEAVES. 
proper to include under this genus, several years since, when arranging and 
naming the New-York Homoptera in the State Cabinet of Natural History, 
The new genera Erythroneura and Empoa thus came to he proposed by me, 
for the reception of a portion of these insects. The characters on which these 
genera were founded, I since learn, make them the equivalents of some of the 
leading sections into which the genus Typhhcyba is divided by Burmeister, 
Zetterstedt, and others. These names may, therefore- remain for distinguish¬ 
ing those species in which the veins of the wings are less numerous and fully 
developed than they are in 'JTyphlocyba proper. The insects in question will 
thus bo divided as follows: 
Tyfulocyba. Wing covers bordered on the hind part of their inner side by 
a submarginal vein running parallel with the exterior edge, and commonly 
having a closed discoidal cell also. 
Erytiironeura. Wing covers not bordered; their outer apical cell four 
sided, or with two right angles at its forward end. 
Empoa. Wing covers not bordered; their outer apical cell three sided or 
with a single acute angle at its forward end. 
Each of these genera or sub-genera admit of further division. About ten 
New-York species or prominent varieties, known to me, fall under the first ol 
these genera, thirty under the second and eighteen under the last. Several of 
these are very similar to and are probably identical with European species. 
105. Three-banded leap hopper, Erythroneura tricincta, Fitch 
Like the preceding, but the bands narrower, the anterior one 
not extended upon the base of the wing covers and the middle 
one not widened in its middle. Length 0.13. I originally met 
with this in abundance upon raspberry and currant bushes. 
Having since found it repeatedly upon grape vines I am inclined 
to think it may possibly be a variety of the foregoing species. In 
both the color of the bands varies, being sometimes tawny red 
and sometimes dusky or black. 
106. Vine-destroying leaf hopper, Erytiironeura Vitifex, new species. 
Yellowish white, the wing covers with oblique confluent blood 
red bands and a short oblique black line on the middle of their 
outer margin; thorax commonly with three red stripes, the middle 
one forked anteriorly and confluent with two red stripes on the 
crown of the head. Length 0.12. When the wing covers are 
closed they appear red with a cream colored spot shaped like a 
heart anteriorly, and on their middle a large diamond-shaped spot* 
with a small red spot in its centre. It resembles an individual ot 
the comes of Say, having the red spots so enlarged as to all run 
