﻿ii6 



2a Frons not transversely impressed; more or less strongly 

 carinate medianly (3) 



3 Lateral keels of frons meeting at its base and forming an 

 angle there (4) 



3a Lateral keels of frons not meeting directly at its base, 

 which is more or less widely truncate (or slightly produced 

 laterally { 5 ) 



4 Vertex not longer than the eyes; genae foliaceous; eyes 

 not nearly touching the lateral margins 12 MajcUa 



4a Vertex longer than the eyes, genae not foliaceous; eyes 

 practically touching lateral margins ii CaUichlainys 



5 Vertex longitudinally impressed, with a further circular 

 impression in the middle 10 Franccsca 



5a Vertex often longitudinally impressed (ent-relv, or between 

 the keels) but not further impressed circularly (6) 



6 Two opaque white bands across the face (7) 



6a Face not banded (8) 



7 Vertex not carinate medianly, very transverse, apical mar- 

 gin not nearly touching-^ apical margin of head dorsally 

 and not connected therewith by keels 9 PyrrhyUis 



7a Vertex carinate medianly, not transvere, apex touching 

 the apical margin of the head dorsally 8 BcncUa 



8 Vertex transverse 7 Achilus 



8a Vertex not transverse. (9) 



9 3 to 4 middle apical cells of tegmina distinctly longer than 

 wide (10) 



9a 3 to 4 middle apical cells of tegmina not (or scarcely) 

 longer than wide 6 Salcniiiia 



10 Frons basally slightly angularly produced laterally 



^ A rgclcusa 



loa Frons basally truncate (or if very shghtly produced angu- 

 lately at the sides, then also similarly in the middle). .(11) 



11 Vertex very lightly impressed longitudinally on each side 

 of the middle keel, wdiich is strong .(12) 



iia Vertex deeply impressed longitudinally, not (or feebly) 

 keeled 4 CalUncsia 



12 Lateral keels of vertex anterolaterally obtuse angled 



3 Eiirynoiiicus 



12a Lateral keels of vertex meeting anteriorly acutely or 

 roundly-acutely (13) 



13 Apical cells of tegmina distinctly declivous, tegminal veins 

 granulate 2 Cyfhiia 



