ACRYDII. 569 



a fourth of an inch in length, quite slender and light brownish 

 yellow, are placed in two rows, one on each side, and inclined 

 so that, beginning at the end of the hole, each egg overlies the 

 next in the same row by about half its length. The aperture 

 is closed by a little disk of a hard gummy substance. I have 

 seen many of the females engaged in excavating the holes, 

 and they always stood with the body in the direction of the 

 grain of the wood, and apparently did not change their posi- 

 tion during the operation. When one was just beginning a 

 hole it was very easy to see the upper appendages rise and 

 open, and each time scrape away a little of the wood. During 

 this operation a frothy fluid is emitted from some part of the 

 abdomen, but whether it serves to soften the wood or to 

 lubricate the appendages and the sides of the hole I did not 

 determine." The genus Stenobothrus differs in having foveolse 

 on the vertex. S. curtipennis Harris is a very common species, 

 and at once recognized by its very short wings. 



In the genus Tragocephala the vertex of the head is promi- 

 nent, the front rather oblique, sloping inwards, and the pro- 

 thorax is acutely angulated posteriorly. T. infuscata Harris 

 and T. viridifasdata Harris are common species ; the former 

 is dusky brown, the hind wings transparent, pale greenish 

 yellow next to the body, with a large dusky cloud near the 

 middle of the hind margin, and a black line on the front 

 margin ; while the latter is green, with dusky fore wings 

 broadly banded with green. 



Pezzotettix closely resembles Caloptenus, except that in 

 some of the species it is wingless. P. borealis Scudder is 

 found in British America, and also on the tops of the moun- 

 tains of New Hampshire and Maine. In the P. alpinus Kollar 

 of Europe there are short wings. The genus Caloptenus has 

 but a slight mesial ridge on the prothorax ; the lateral ridges 

 vary in size, and the sternal tubercle is very large, while the 

 tip of the male abdomen is much swollen. Caloptenus femur- 

 rubrum Harris (Fig. 564, b) is the common Red-legged grass- 

 hopper. It varies greatly and has been so abundant in New 

 England and Canada, though not of late years, as to become a 

 public calamity. It has been seen very rarely on the Labrador 

 coast, and it is a very widely distributed species, ranging from 



