392 ANNUAL REPORT OF NEW- YORK 



GllAPE. 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 JErythroneura and Empoa thus came to be 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 Typhlocyba 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 Typhlocyba proper. The insects in question will 

 thus be divided as follows: 



Typhlocyba. 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. 



Erythhoneura. Wing covers not bordered; their outer apical cell four 

 Bided, 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 of 

 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 leaf 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, Erythroneura 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 of 

 the comes of Say, having the red spots so enlarged as to all run 



