NO. l6.] ORTHOPTERA OF CONNECTICUT. 71 



Thompson (A. P. M.) ; Woodbridge, 16 April, Kent, 31 August 

 (W. E. B.) ; West Haven, 27 June (H. L. V.) ; New Haven, 

 26 April, 15, 17 May, Scotland, 25-27 July, Meriden, 29 April 

 (B. H. W.)- 



TRYXALIN.E. 



In the Tryxalina the vertex of the head is nearly horizontal, 

 the face quite oblique, generally forming an acute angle at the 

 union with the vertex. Lateral foveolse are usually well de- 

 veloped, though sometimes absent. The eyes are usually longer 

 than that portion of the cheek below their orbits. The antennae 

 are variable, being acuminate, depressed, or rarely clavate, and 

 situated between or below the middle of the eyes. The pronotum 

 has the front and rear margins of the disk nearly equal in width ; 

 all the carinae are usually distinct, the median carina cut by one 

 sulcus and not raised in the form of a crest. The tegmina and 

 wings are often short and rudimentary, but sometimes fully 

 developed in members of the same species. The inner wing is 

 usually transparent, without bright colors or a black band. 



Key to Genera. 



1. Antennae distinctly ensiform (Fig. 13). Face very 



oblique 2 



Antennae not ensiform. Face less oblique 3 



2. Prosternum with obtuse tubercle Pseudopomala p. 73 



Prosternum without tubercle Tryxalis p. 72 



3. Antennae linear. Spurs on inner side of posterior tibiae 



about equal 4 



Antennae slightly clavate (Fig. 16). Apical spur on 

 inner side of posterior tibiae twice as long as the other 

 spur Eritettix p. 74 



4. Foveolae of the vertex wanting or not visible from above 5 

 Foveolse of the vertex visible from above (Fig. 24). . 9 



5. Antennae short, about equal to head plus pronotum. 



Tegmina with scapular area not dilated 6 



Antennae long, depressed, from one and one-half (male) 

 to twice (female) as long as head plus pronotum. 



Scapular area of tegmina dilated (Fig. 23) 



Chloealtis p. 82 



