I02 



Issidae. 



This family contains three subfamiHes : 

 I Face not laterally angulate (2) 



1 a Face laterally angulate 3 Eur\'brachyinae 



2 Hind tibiae with a spine or spines i Issinae 



2ri. Hind tibiae spineless in adidts (but spinose in nymphs) .... 



2 Amphiscepinae 



Issinae. 



The following table is amended from the first memoir : 

 I Tegmina reaching at least to apex of abdomen, clavus 



sutured off from corium (2) 



la Tegmina in the form of narrow, elongate straps, reaching far 



beyond the apex of the abdomen ; wings rudimentary ; 



hind tibiae with two spines 10 Alleloplasis 



lb Tegmina abbreviated, clavus not sutured olt from corium: 



wings rudimentary ; hind tibiae with one spine 



9 Gelastissus 



2 Wings reaching at least to apex of abdomen (3) 



2a Wings absent or rudimentary (6) 



3 Appearance Cercopoid ; wings deeply incised apically. . . (4) 

 3a Appearance Poekillopteroid ; wings not incised apically.... 



4 Tylana 



4 Frons longitudinally carinate, sometimes feebly ; inner fork 



of radial vein practically forming a straight line with the 



basal stalk of the vein (5) 



4a Frons polished, not carinate ; inner fork of radial forming an 

 obtuse angle inwardly, with the basal stalk of the vein. . . . 

 3 Phacoptcryx 



5 Tegmina less than 2^ times as long as broad, inner fork of 



radial vein not reforking till just basal of the apical margin 



1 Chlaiiiydoptcry.v 



5a Tegmina over 3 times as long as broad, hmer fork of radial 



reforking well basal of the apex of the clavus 



2 Apsadaropteryx 



6 Hnd tibiae with i spine 5 Lipocallia 



6a Hind tibiae with 2 spines (7) 



7 Hind margin of pronotum straight (8) 



7a Hind margin of pronotum widely emarginate 6 BUbilis 



8 Frons basally truncate, with a keel along the middle 



7 Hystcropterurn 



