1922] NATURAL SCIENCES OF PHILADELPHIA 127 



cidedly greater than the pronotal length, scarcely narrowing to 

 the broadly rounded apex, the curvature of which is stronger 

 toward the costal than toward the sutural margin. Femora with 

 genicular lobes bispinose, except those of caudal femora which are" 

 unispinose. Caudal femora with dorsal surface deplanate in prox- 

 imal half. Ventral femoral margins armed with very minute 

 spines, as follows. Cephalic internal 13 and 14, cephalic external 

 8 and 10, median internal 0, median external 17, caudal internal 0, 

 caudal external 11 and 13. Supra-anal plate very elongate, sym- 

 metrically trapezoidal the lateral margins weakly convergent in 

 proximal two-thirds, thence parallel but distad curving broadly 

 into the truncate apex. Cerci elongate, cylindrical, curving 

 inward, gradually and very feebly enlarging in proximal fourth, 

 thence gradually tapering to near apex where they are suddenly 

 thickened and truncate, the ventro-internal portion produced in a 

 broad, acute, knife-like plate, resembling the dactyl of a mole- 

 cricket. Subgenital plate very elongate, curving evenly dorsad 

 with apices above distal portion of abdomen; cleft to near base 

 and sulcate to base itself, the two processes thus formed slender 

 and tapering, weakly divergent in proximal half, thence cylindrical 

 weakly convergent and armed on the dorsal surface 13 with very 

 minute teeth to their closely adjacent apices. 



General coloration yellowish brown, probably pale green in life. 

 Antennae light brown ventrad, darker dorsad, with weakly defined 

 dark annuli. Head immaculate. Pronotum with a series of 

 blackish flecks and dots along area of intersection of disk and 

 lateral lobes. Tegmina with an occasional fleck of dark brown 

 in areas between veins of distal portion of section between median 

 vein and its branch and throughout medio-ulnar section, areas 

 between veins in ulnar-anal section with very numerous, exceed- 

 ingly minute, dark brown flecks. Cephalic and median femora 

 with a small longitudinal blotch and a few flecks of dark brown 

 proximad on the external face near the ventral margin. Median 

 and caudal tibiae with a minute fleck of dark brown proximad on 

 the external face. 



Length of body 22, length of pronotum 4.7, least width of 

 pronotal disk 2.4, greatest (caudal) width of pronotal disk 3.3, 

 greatest (caudal) depth of pronotal lateral lobe 3.9, length of 

 pronotal lateral lobe 4.1, length of tegmen 36.2, greatest width 

 of tegmen 6.2, width of tegmen near apex 6, length of cephalic 

 femur 8.1, length of caudal femur 25 mm. 



The type is unique. 



Elimaea filicauda new species. Plate XI, figure 7. 



This insect resembles more closely E. parumpunctata (Serville) 

 in general form, but shows a type of genitalic specialization agreeing 



13 Due to the curvature of the plate this surface, in the distal portion, faces 

 ventrad. 



