376 STUDIES IN THE ISCHNOPTERITES (oRTHOPTERa) 



Form slightly broader, thus interocular space is slightly wider. Tegmina and 

 wings distinctly less elongate. The wings have 1 incomplete and 4 complete 

 rami of the ulnar vein. Sixth dorsal abdominal segment unspecialized mesad, 

 but with latero-caudal angles weakly acute-angulate produced caudad; seventh 

 segment almost hidden, but with minute, conical, chitinous projections laterad 

 at production of sixth segment; eighth segment narrowly visible with latero- 

 caudal angles hardly produced. Supra-anal plate rotundato-trigonal pro- 

 duced between cerci, with traces of a medio-longitudinal sulcation strongest 

 at the apex. Subgenital plate strongly convex; free margin convex, this weak- 

 est mesad. 



Measurements {in rnilUmeters) 

 S E 



Cincinnati, Colombia 



mM 



Type 19 4.6 6.3 20.4 5.9 3.7 



9 

 Allotype 17.6 4.8 6.8 17 5.3 2.8 



Coloration. — The sexes are very similar in coloration, the fe- 

 male having the face markings darker and the abdomen more 

 suffused. Head dark ochraceous buff, the vertex to immedi- 

 ately below the clear ochraceous buff ocelli, deep chestnut brown, 

 and below the ocelli a narrow transverse band of the same show- 

 ing some ventral convexity. Pronotum buckthorn brown with 

 disk heavily washed with russet, this fading gradually into the 

 marginal portions. Tegmina translucent dresden brown, the 

 marginal field slightly paler. Wings with anterior field from 

 costal margin to discoidal vein and in area of ulnar forks, 

 heavily washed with cinnamon brown, posterior field washed 

 with cinnamon brown, heavily in area of axillarj^ forks. Dor- 

 sal surface of abdomen, in male, buckthorn brown washed with 

 chestnut brown laterad and distad, with subchitinous portion of 

 supra-anal plate buckthorn brown; in female, much more heavily 

 washed with blackish chestnut brown laterad and caudad, includ- 

 ing all of supra-anal plate. Cerci above dark briefly proximad, 

 remaining portion pale; below dark. Limbs ochraceous buff 

 washed with russet distad. Ventral surface of abdomen, of male, 

 chestnut becoming ochraceous tawny laterad, subgenital plate 

 strikingly blackish brown, very narrowly margined laterad and 

 caudad with ochraceous tawny; of female, shining blackish chest- 

 nut brown, becoming paler meso-proximad. 



The species is known from the described pair. 



