342 Annals of the Carnegie Museum. 



hh. Anterior femora with their internal genicular lobes 

 obtuse. 

 /. Tegmina and wings completely developed. 

 j. Anterior tibiae four-angled. 



k. Auditory opening of anterior tibiae narrow. 



I. Intermediate and hind femora with the 



genicular lobes spined. .Cocconotus Stal. 



II. Genicular lobes of all the femora produced 



into a spine Cratonotiis Bolivar. 



kk. Auditory opening of tibiae rather wide. 



Thamnobates Sauss. & Pict. 

 _;■_;. Anterior tibiae tumescent below the foramina, 



rounded Condylocnemis Redtenbacher. 



ii. Tegmina and wings abbreviated. 



j. Clypeus smooth. Posterior tibiae spined above 



on both margins. .Nannolellix Redtenbacher. 



jj. Clypeus bituberculate or bispined. Posterior 



tibiae above smooth on the outer margin, or 



one-spined Disceratus Scudder. 



gg. Pronotum smooth, shining. (All the femora with the 



genicular lobes spined) Homalaspis Brunner. 



ee. Anterior tibiae more than one-half longer than the pronotum, 



compressed, above sulcate, the auditory foramina widely 



opened. (Legs long, slender.) 



/. Middle tibiae rounded below, neither sulcate, nor spined. 



Anterior tibiae above provided with an apical spine on both 



sides. (Posterior tibiae armed above with an apical spine 



on both sides) Ischomela Stal. 



ff. Middle tibiae sulcate below, often spined. Anterior tibiae 

 without apical spines above. 

 g. Pronotum smooth, neither granulose, nor rugose. 



h. Middle tibiae above sometimes armed on the hind 

 margin of the base with some spinules. Pronotum 

 elongate, the transverse sulci equally and profoundly 

 impressed. Color greenish testaceous. 



Jimenezia Bolivar. 



hh. Middle tibiae above spined on both sides. Pronotum 



short, the hind-most sulcus deeply impressed. Color 



fusco-testaceous Macrochilon Redt. 



gg. Pronotum granulose or rugose. 



h. Anterior margin of the pronotum tuberculate. Meta- 

 zona armed on each side with a spine. {Habitus of 



the genus Brisilis) Acanthodiphrus Walker. 



hh. Anterior margin of the pronotum not tuberculate, 

 semicylindrical, or with the sides of the metazona 

 angulate, not spined. 

 i. Metazona of the pronotum not angulated at the 

 sides. Wings unicolored, lightly smoked. 



