ORTHOPTERA— AURIDIDAE— P. NEVADENSIS. 867 



front and the posterior lobe punctulate ; this lobe shorter than the front 

 lobe ; lateral lobes anteriorly and posteriorly punctate. Elytra extending 

 to the apex of the posterior femora ; apex very slightly narrowed and sub- 

 rotund ; the anal and axillary veins connect not far from the base. Posterior 

 femora extend somewhat beyond the apex of the abdomen. 



PEDIOSCERTETES, nov. gen. 

 Pedioscertctes, published iu Proc. Acad. Nat. Sci. Pbila., 1S73, by permission. 



Occiput somewhat ascending ; vertex rises obliquely in front of the 

 eyes in the form of a triangular pyramid. The dorsum of the pronotum 

 and head as seen from the side taken together form a regular curve from 

 the posterior extremity of the one to the tip of the other, the concave side 

 being' upward The vertex as seen from above is triangular, convex above; 

 no median or lateral foveola? ; the tempora represented only by a slight 

 depression on the deflexed margin. Frontal costa distinct above the ocellus, 

 fading»below ; face suboblique and slightly incurved. Pronotum regularly 

 expanding posteriorly, subtricarinate, the front lobes being rounded so as to 

 render the lateral carina? nearly obsolete ; median carina absent or but a 

 minute line; front margin truncate; hind margin rounded ; the three trans- 

 verse impressions distinct, close together, and occupying the second fourth, 

 the posterior sulcus being about the middle. Elytra and wings normal, 

 extending a little beyond the tip of the abdomen. Posterior femora slender, 

 but slightly enlarged at the base ; upper and lower carina? slight, entire, 

 unarmed, not quite reaching the tip of the abdomen in the female ; tibiae 

 fully as long as the fermora; spines not very numerous ; first joint of the 

 posterior tarsi as long as the other two. Metasternum broad ; prosternum 

 narrow, unspined. 



PEDIOSCERTETES NEVADENSIS, sp. nov. 

 Plate XLIII, Fig. 4. 

 Peclioscertetcs nevadensis, Ext. Pub. iu Proc. Acad. Nat. Sci. Phila., by permission. 



The tip of the vertex is separated from the portion between the eyes 

 by a shallow, curved, transverse sulcus, which runs from the upper canthus 

 of one eye to that of the other ; the portion in front of the eye not quite as 



