162 I'YRGOMOEPIlIXyE. 



5 (4) Pronotum with tlie posterior 



angles less projecting, slightly ^ ^,,,,,,,,„,^ ^^ ^ ^ ic3. 

 •^•^^"^^ i P breris, BoL, p. 163. 



6 (1) Wings distinctly shorter than 



the tegmina. 



7 (10) Wings extending at least to the 



middle of the hind femora. 



8 (9) Tegmina almost covering the 



abdomen incerfiis, BoL, p. 163. 



9 (8) Tegmina sUiorter than the 



abdomen . . trachyptervs, Blanch., p. 165. 



10 (7) Wings very short or wanting. 



11 (12) Tegmina aslong as theabdomen. /<V(.!fj»'.s, Blanch., p. 16"). 



12 (11) Tegmina scarcely extending 



beyond the middle of tlie 

 abdomen. 



13 (20) Tegmina half as long as the 



abdomen. 



14 (15) Size small (Kvypterus, Blanch., p. 166. 



15 (14) Size larger. 



10 (19) Tegmina gradually and much 

 acuminate. 



17 (18) Hind femora with a distinct 



black spot above snmsiirei, Bol., p. 166. 



18 (17) Hind femora without dark spot . ooJiCf/nrs, sp. n., p. 165. 



19 (15) Tegmina subparallel-sided in 



the middle, arcuately acumi- 

 nate at apex sordidus, sp. n., p. 167. 



20 (13) Tegmina quite rudimentary . . hrac/ii/pterus, BoL, p. 167. 



[The foregoing was left uncompleted. It has been finished from 

 Bolivar's Key (Bol. Soc. Espah. iv, 3904, p. 92) and tlie new species- 

 added in their places, so far as the scanty materials permit ; but it 

 should be borne in mind that the males are generally narrow and have 

 lono-er tegu)ina than the females, and individuals of the same sex and 

 species vary considerably in the length of the tegmina and wing^.] 



188. Chrotogonus paliidus, Blanch. 



Ommexycha jmllidum, Blanchard, Ann. Soc. Ent. France, v, 1836, 

 p. 023, pi. xxii, fig. 10. 



Dull pale yellow. Head short, with short longitudinal black 

 lines behind the eyes. Autennte yellow, tipped with blackish. 

 Eyes pale, round, prominent. Pronotum short, broad, ridged 

 above, hind border not festooned, the edges rather paler, with a 

 brown spot on each side ; two approximating black granules in 

 front, and a row of large black tubercles behind. Sternum yellow, 

 spotted with black. Tegmina as long as the abdomen in the 

 male, shorter in the female ; with numerous indistinct small black 

 dots, in longitudinal rows, the central row marked with white in 

 the male. AViugs completely hyaline, and rather longer than the 

 tegmina in the male, shorter in the female. Abdomen smooth, 

 yellow, spotted with black beneath. Four front legs pale yellow, 



