88 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Antennae of male longer than hind femora, the basal 

 joints strongly flattened. Frontal costa narrowed 

 towards apex, but at the widest point above the ocellus 



narrower than the basal joints of antennae 



Psinidia p. 102 



10. Hind tibiae entirely pale. General color light brown or 

 buff and white. Radial veins of wings not enlarged 



Trimerotropis p. 103 



Hind tibiae dusky towards base and at tip. General 

 color dark gray or black. Wings with two or three 



radial veins distinctly enlarged (Fig. 34) 



Circotettix p. 104 

 Arphia Stal. 



Vertex of the head triangular with the apex blunt or truncate, 

 the disk with a distinct, usually deep, transverse curved depres- 

 sion back of the middle. Lateral carinae distinct, the median 

 carina broken by the depression. Foveolae rather large but 

 shallow. Frontal costa rather broad and sulcate around and below 

 the ocellus. Pronotum with the medium carina compressed, high, 

 and not notched by the principal sulcus. The front margin 

 obtusely angulate and extended upon the posterior third of the 

 occiput. Lateral edges of the disk rounded, lateral carinae 

 distinct only on the metazona. Sides of the pronotum not as 

 long as deep. Tegmina leathery in texture, densely and irregu- 

 larly reticulate. Inner wings (of our species) yellow at base. 

 Hind femora stout, the basal half broadly flattened. 



a 



FIG. 26. a. Arphia sulphurea, male. 

 b. Arphia xanthoptera, male. 

 Lateral view of pronotum. 



Key to Species. 



Frontal costa with the upper third narrowed, the sides ap- 

 proaching each other and meeting at connection with 

 the vertex. Median carina of pronotum moderately 



