320 TERTIARY INSECTS OF NORTH AMERICA. 



ness of the scutellum, and must be referred instead to the Cercopida, although 

 larger than any species of that group which I find noticed, while in compar- 

 ison with the temperate forms of that subfamily it is gigantic, most of our 

 own species not exceeding one-fourth its length. The name is not very 

 well chosen. 



The body is robust, the head large, apparently flat above, about twice 

 as broad as long, but considerably narrower than the thorax, the front regu- 

 larly and very broadly convex ; clypeus about half as broad as the head, 

 somewhat convex, coarsely carinate down the middle with distinct lateral 

 transverse ruga? ; ocelli indeterminate ; rostrum shorter than the breadth of 

 the tegmina. Thorax broadening posteriorly, continuing the curve of the 

 head ; the front margin rather deeply and very broadly excised, so that 

 its middle is straight and the lateral angles are rather sharply angulate ; the 

 hind margin with very oblique sides, so that these, if continued, would form 

 less than a right angle with each other, but toward the middle line incurved, 

 so that the thorax is rounded posteriorly and excised in the middle. Scu- 

 tellum very small, scarcely more than half as long as the thorax and rather 

 longer than broad, tapering more rapidly in the basal than in the apical half. 

 The fore tibiae apparently unarmed, and of the same length as the fore 

 femora ; the apical tarsal joint of same legs tumid, longer than the other 

 joints combined, of which the second is less than half as long as the basal 

 joint, the whole leg only a little longer than the breadth of the tegmina; 

 fore coxae apparently in close proximity. Tegmina large, nearly equal 

 throughout, the inner base angularly excised next the posterior border of the 

 thorax, the apex well rounded, a little produced anteriorly ; it was appar- 

 ently coriaceous, with little mark of any excepting some of the principal 

 veins, which are elevated. The base of the costal part of the wing is so 

 expanded, to give equality to the wing, that the radial vein at its base is very 

 near the middle of the tegmina, and continues so until it forks in the middle 

 of the basal half of the tegmina ; its lower branch continues its course sub- 

 . parallel to the costal margin, while the upper branch curves upward and 

 follows close to tMe costal margin until, like its fellow, it is lost in the mem- 

 brane near the tip of the tegmina ; the sutura clavi runs straight to the pos- 

 terior border beyond the middle of its outer half, and midway between the 

 two the radial originates, forking almost immediately, the forks dividing the 

 inner area equally between them, and in the middle of the outer half of the 



