148 OETHOPTERA. 



more or less obliterated between the principal sulci. Summit 

 of the cranium usually carinulate between the eyes. 

 c. $ of medium or large size, the tegmina surpassing the 

 abdomen in both sexes; area of the ulnar fork rarely 

 filled with a single, usually with a complete double, row 

 of cells. Metazona usually tumid centrally to a greater 

 or less extent, and considerably depressed or indentate 

 anteriorly on either side of the median carina. 

 d. Intercalary vein of the tegmina near its extremity run- 

 ning so close to the median as commonly to be hardly 

 separated from it by more than its own thickDess ; 

 markings of the tegmina sharp and well-defined ; trans- 

 verse bands of the wings distinctly narrowed, sometimes 

 obsolescent, at the anal vein ; process of the metazona 

 normally less than a right angle. 

 e. Bounding-walls of the vertical scutellum and other 

 carinse of the vertex generally dull and low ; meta- 

 zona about two-thirds as long again as the prozona, 

 its dorsum variable, its rugosities not very prominent, 

 rarely confluent ; the transverse fuscous band of the 

 wings usually very broad, in the second lobe below 

 the anal vein often more than twice as broad as the 

 width of the lobe. 

 /. Species of great size ; the maculations on the apical 

 third of the tegmina often obscure by lack of depth 

 of colour, lessening the contrasts between the 

 darker and lighter spots, but sometimes sharp 

 and well-defined; the fuscous band of the wings 

 generally very dark ; inside of the hind femora 



usually blue, except the red apical third .... 10. corallipes, Hald. 

 //. Species of rather small or medium size ; the macula- 

 tions on the apical third of the tegmina generally 

 with distinct contrasts; the fuscous band of the 

 wings generally fuliginous ; inside of the hind 



femora usually wholly red . . . . , ,. . . . 11. zapotecus, Sauss. 

 ee. Bounding-walls of the vertical scutellum and other 

 carinse of the vertex usually sharp and relatively 

 high; metazona twice as long as the prozona, its 

 dorsum centrally tumid, its rugosities prominent and 

 usually more or less confluent; the transverse fuscous 

 band of the wings usually narrow or moderate, in the 

 second lobe below the anal vein rarely so much as 

 twice the width of the lobe. 

 /. The transverse pale band of the anterior margin of 



