January .8g6.] PSYCHE. 325 



Harris' name parvipciui/'s, which was In conchision I desire to express my 



applied to tlie short-wingeil form, and gieat obligation to Mr. Scudder for the 



I have proposed pennata to distinguish opportunity so freely afforded for ex- 



the long-winged form. The elimina- amining his collection and for aid ren- 



tioti of one species causes the first of dered in consulting the literature of the 



the present group to be numbered 6. group. 



KEY TO SUBFAMILIES AND TRVXALIN.-E. 



d. Pronotum covering all or neaily all oi' the abdomen; pulvilli absent from 

 between the tarsal claws. ...... Tettiginae. 



aa. Pronotum normal, not covering the abdomen ; pulvilli present. 



d. Prosternum not spined, — flat, convex, or at most with an obtuse tubercle. 



c. Hind margin of pronotum not or but little produced, — truncate, 



convex, or very obtusely angulate. Face usually retreating, and 



angulate at meeting with vertex. . . . Tryxalinae. 



cc. Hind margin of pronotum strongly produced, — acute, right-angled, 

 or nearly so. Face usually nearly or quite vertical, and rounded at 

 meeting with vertex. ..... Oedipodinae. 



6i. Prosternum with a prominent conical or cylindrical spine projecting 

 ventrad to the level of the distal end of coxa. . Acridixae. 



Trvxalinae. 



I. Antennae distinctly ensiform. (Figs. 6, A.) 



2. Prosternum obtusely tuberculate. ,} with rasp on inside of hind femora, 

 and terminal segment of abdomen twice as long as wide (Fig. 6a; ; 9 

 with ovipositor short, bearing a stout tooth on external maigin of each 

 valve (Fig. 6b). Wings and tegmina usually abbreviated. (Gen. 5, 

 Psciidoponiala, gen. nov.) . . . Sp. 6, Ps. bracJivptera. 



[3'. Prosternum not tuberculate. $ without rasp and terminal segment 

 shorter (Fig. Aa) ; 9 with ovipositor long, distinctly exserted, and 

 without teeth as above (Fig. Ab). Wings and tegmina fully developed. 



Tryxalis brevicoriiis. ] 

 I '. Antennae linear. 

 3. Tegmina without well-developed intercalary vein. (Cf. Figs. Sb, 13a.) 

 4. Foveolae not visible from above, — often shallow or wanting. 



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

 with scapular area not dilated. Wings functional (though some- 

 times quite small), provided with opaque thickening on veins of 

 front marginal apical third (Fig. 8e), in $ a coarsely and regularly 

 reticulated space behind it. 



