27 



third of an inch long v of a bright grass-green color, the head and thorax 

 above yellow. It varies considerably in size, and the females average 

 considerably larger than the males. The head is sharply pointed, has 

 a number of fine black lines on its upper surface ; the face is shaded 

 dark brown, and has a double series of transverse bars. 



Thelarvas which appear to be most common in early summer are light 

 green or yellowish, and agree with the adults in having the head sharply 

 pointed. I have found them most common in May and June, and, as 

 adults are abundant from this time till autumn, it is difficult to say 

 whether there is more than one brood. I have not seen adults in winter 

 or early spring, audit seems possible that eggs in this and allied species 

 are laid in fall to hatch in spring. As this would be contrary to the 

 habit of the majority of insects in this family it will require further ob- 

 servation to establish it. It is at least quite certain that they do not 

 hibernate as adults in grass, and unless eggs are deposited in steins of 

 grass or other plants in grass land the insect can not be destroyed by 

 burning in early winter or spring. It will be seen that there are im- 

 portant points to determine about this very common insect, and means 

 of destroying it may depend in large degree upon the determination 

 of some of the very simple steps in its life-history. It jumps readily, 

 and like other members of the family may be treated on the u hopper- 

 dozer " plan. 



The New York Leaf-Hopper. 



(Diedrocepliala noveboracensis Fitch.) 



This species is a little larger than the mollipes, but resembles it very 

 closely. Its head, however, is less acute, and there are four distiuct 

 black spots on the front margin of the head, two of them close together 

 at the tip and one each side in front of the eyes ; the lower surface of 

 the head lacks the brown color of mollipes, or is but faintly browned. 

 Their habits appear to be much the same, and they are often found iu 

 the same locations, though I have found this species more commonly 

 in the grass in wooded pastures or at the borders of thickets. I have 

 never observed it in such abundance as I have the mollipes, and ordi- 

 narily it is probably of little importance. With equal numbers it would 

 of course be as serious a pest as any of the other species of the family. 

 Professor Uhler says it is common in many parts of the United States 

 north of Maryland and it extends north into Canada and British Co- 

 lumbia. 



(Diedrocepliala versuta Say.) 



This species bears a striking resemblance to coccinea, and has very 

 similar habits, occurring in similar localities, and probably living upon 

 the same plants. While Say's description was published in 1S31 I know 

 of no reference to the species iu works on Economic Entomology, and 



