304 Annals of the Carnegie Museum. 



e. Costal area with seven to nine transverse veins. 



/. Cerci of male curved, shorter than the subgenital plate. 



tener Stal. 

 //. Cerci of male straight, longer than the subgenital plate. 



proxima sp. nov. 

 ee. Costal area with twelve to fifteen transverse veins. 



/. Costal area with about twelve transverse veins [Mexico, Cen- 

 tral America] mexicanus Saussure & Pictet. 



ff. Costal area with about fifteen transverse veins. 



g. Posterior margin of the elytra infuscated. Anterior tibiae 

 five-spined on both of their margins [upper Amazon]. 



marginata Redtenbacher. 

 gg. Posterior margin of the elytra concolcrous. 

 h. Pronotum behind roundly produced. 



i. Cerci of male much shorter than the subgenital plate, 

 not cruciate nor forficate. 

 j. Valves of the subgenital plate of the male with 

 their superior margin provided with a distinct 

 angle. 

 k. Size smaller (male tegmina ii mm.), superior 

 angle of valves of subgenital plate obtuse. 

 virnes Thunberg. 

 kk. Size larger (male tegmina 13.5 mm.). Su- 

 perior angle distinct. 



abnorfnis Redtenbacher. 

 jj. Valves of the subgenital plate above destitute cf 

 an angle (male tegmina 9.5 mm.). 



similis sp- nov, 

 ii. Cerci of male very long, recurved, forficate, or 



cruciate caudala Redtenbacher. 



Ml. Pronotum truncate behind. The tegmina short. 



macilenta Redtenbacher. 

 dd. Anterior area of tegmina with about twenty-five cross-veins. 

 e. Anterior tibiae five-spined. 



/. Front tibiae unusually elongate and curved . .nemoptera Bolivar. 



//. Front tibiae less elongate and less curved teres DeGeer. 



ee. Anterior tibiae four-spined manlispa Bolivar. 



cc. Costal field of the tegmina irregularly veined, the cross-veins more or less 

 tortuous. 



d. Size smaller (tegmina of female 15 mm.) irregularis sp. nov. 



dd. Size larger (tegmina of female 18 mm.) coriacea Redtenbacher. 



A A. Tegmina not reaching the ape.x of the abdomen. 



b. Middle tibiae three-spined below [Brazil] cephaloles Bolivar. 



bb. Middle tibiae unarmed below [Borneo] dubia Karny. 



