58 Mr. W. L. Distant on llomoptera. 



Vertex about as long as breadth between eyes, somewhat 

 flattened and anteriorly deflected, apical margin broad and 

 truncate, centrally longitudinally sulcate for its entire length ; 

 face broad, centrally flattened and slightly foveately de- 

 pressed, the margins shortly, strongly, transversely carinate; 

 pronotum quadrangular, as long as broad at base, slightly nar- 

 rowed before the posterior angle, the lateral margins almost 

 straight; scutellum considerably longer than broad, posteriorly 

 acuminate, transversely impressed before apical area, which is 

 gibbous, cordate, the extreme apex slender; tegmina narrow, 

 subhyaline, the costal margin concavely sinuate before apical 

 area, a transverse discal vein at about one third from base, 

 four apical cells, three ante-apical cells (on one tegmen of 

 the type the middle ante-apical cell possesses three trans- 

 verse veins, in the other tegmen these are absent) ; anterior 

 tibiae somewhat broadly compressed and foliaceous, sulcate 

 above ; abdomen compressed towards the base. 



Allied to Lissoscarta, Stal, from which it differs by the 

 longer and sulcated vertex, the flattened (not convex) face, 

 the much more dilated anterior tibiae, &c. 



Propetes compressa. 



Propetes compressa, Walk. List Horn. iii. p. 797 (1851). 

 Tettigonia compressa, Sign. Aim. Soc. Ent. Fr. (3) iii. p. 516, pi. xxi. 

 fig. 9 (1855). 



Hub. Amazons. 



Genus Diedrocephala. 



Diedrocephala, Spin. Mem. Mat. lis. Soc. Ital. Sci. xxv. p. 97. n. 332 

 (1852); Stal, Hem. Fabr. ii. p. 78 (1809) ; Ball, Proc. Iowa Acad. 

 Sci. viii. p. 63 (1901). 



Type, D. varieyata, Fabr. 



Stal (supra) has clearly defined this genus from the salient 

 characters of the type — " Capite sulco instructo ; tegminibus 

 apice truncatis vel sinuato-truucatis." 



Diedrocephala ignifer. 



Ciccus ignifer, Walk. List Horn. iii. p. 804 (1851). 



Vertex much longer than breadth between the eyes, the 

 lateral margins oblique, very slightly sinuate, narrowed to 

 apex, which is truncately rounded, strongly centrally longi- 

 tudinally sulcate. 



Hob. Colombia. 



