16 Illinois State Laboratory of Natural History. 



of lines going backward from this frontal line and uniting, thus 

 forming a pear-shaped cell, from the hack edge of which two 

 pairs of lines radiate; an elbowed line to the eyes; and another 

 meeting the front margin at the fore end of the genie, 

 forming an oval (clI. There is often an additional line dividing 

 this cell in halves. The i)eciiliarities of the sculpturing consist 

 in a shallow median longitudinal groove and a pair of shallower 

 and wider ones extending from the ocelli to the hind margin. 

 Beneath irregularly marked with black spots; a median line 

 from the middle of the front edge to the middle of the front; 

 an additional line often present, from the middle of the side of 

 the front edge, ])arallel with the median line. Generally a 

 faint line on the suture between the clypeus and the front. 

 The lower margin of the eyes is distinctly concave. 



TJwra.r. Pronotum slaty blue or gray, anterior margin 

 reddish yellow, more or less distinctly separated from the darker 

 parts by a sinuous black line; punctures dark or black; base 

 darker. Scutellum l>right reddish yellow marked with black 

 as follows: a transverse line on the depressed portion; a 

 pair of longitudinal lines from the outer ends of this to the 

 anterior margin; a short transverse line connecting the middle 

 of these; and, lastly, a still shorter median line connecting the 

 middle of the transverse lines. Besides this the front median 

 area is irregularly sj)otted with black. Beneath, the thorax is 

 marked with irregular dots and patches of black, variable in 

 form, number, and position, so that all that can be said is that 

 the pleurites of the mesothorax and metathorax are generally 

 darkest. The coxal cavities are large. The elytra are slate- 

 blue or gray with the tips hyaline, the apical cells quite large, 

 and the claval veins connected by one or more transverse veins. 

 The wings are smoky or hyaline. 



AlnJomcn. The abdomen is reddish yellow, all but the 

 lateral edges of the first five dorsal segments and the bases of 

 the sternal }ti(^ces, which are black. 



Not a very common insect, but may be found at almost any 

 time in all parts of the State. It lives oil the grape vine and 

 is said to become so numerous sometimes as to be very 

 injurious. 



