﻿7a Frons with the lateral keels paler than the ground colour. 



(II) 



8 Frons dull yellowish or testaceous (9) 



8a Frons shining, fuscous or subsanguineous (10) 



9 Hind margin of pronotuni vvdely angulately emarginate. 

 3 parysatis 



9a Hind margin truncate 2 ordovix 



10 Middle keel on face- especially on clypeus, paler than the 

 ground colour 9 hyas 



10a Middle keel concolorous with the disk 10 disonymos 



1 1 Ground colour of frons pale yellow (12) 



iia Ground colour dark yellow (15) 



12 Tegmina blackish 8 uiatanitii 



12a Tegmina yellowish hyaline (13) 



13 Head dorsally longer than wide. 11 ochrias 



13a Head dorsally not longer than wide (14) 



14 Male: pygophor blackish 7 lasiilis 



14a Male: pygophor yellowish 6 dryopc 



15 Head distinctly produced in front of the eyes (16) 



15a Head not, or scarcely, produced in tront of the eyes. • .(18) 



16 Tegmina dark fuscous, whitish opaque apically 



5 alhotristriatiis 



16a Tegmina hyaline or cinereous or fuscous, immaculate.. (17) 



iy Frons long and narrow, lightly and gradually narrowing 



basally; lateral keels of pronotum not curved under the 



eyes, but reaching posterior margin of pronotum. 4 ostoriiis 



17a Lateral margins of frons slightly sinuate, a trifle broader 



apically than basally; lateral keels of pronotum curving 



outward- not reaching posterior margin of pronotum 



1 thycstcs 



18 Long-winged forms. (19) 



i8a Short-winged forms (20) 



19 Scutellum black 19 astyanax 



19a Scutellum with the hind angle white 18 pncUa 



20 Apical margin of tegmen very narrowly white (21) 



20a Apical margin not continuously white 20 algebra 



20b Apical margin rather broadly white 17 astyanax 



21 Tegmina deep fuscous 21 dilpa 



2ia Tegmina pale, partly smoky 18 pucUa 



