23S 
large. Tegmina large, in a few genera narrow, with a distinct 
costal area with cross-veins; the clavus granulate, often open 
and the claval veins separate, or the claval veins joined near 
apex. 
The family was monographed in 1902 by Melichar, who 
included the Acanaloniidae. By excluding these we have a 
homogeneous group of about eighty to ninety genera which can 
be divided into two subfamilies of strikingly different facies. 
1. (2) Body considerably compressed laterally, the tegmina steeply tecti- 
form, the apical portion of the costal margins and’ the apical 
margins meeting together, or approaching very closely when at 
MGS Gewese roep nae Ne erties lore ops asi iw MagsWohiaioa10,.01.6) oueseteogerels Flatinae 
2. (1) Body not compressed laterally or only slightly so; tegmina hori- 
zontal or only slightly tectiform, the apical portion of costal 
margins not meeting together beneath the abdomen. .Flatoidinae 
In the few genera in which I have examined the male geni- 
talia they appear to be very uniform. The periandrium forms 
a short tube or ring and from each side a long, narrow appen- 
dage arises which generally has the apex enlarged or complex. 
The penis forms a large tube, often funnel-shape and flattened - 

PLATE V. 
12. Olonia picea (Eurybrachidae). Ventral view male genitalia; a, right 
side view male genitalia with styles and g! cut away; b, aedeagus. 
13. Pochaza fuscata (Rieaniidae). Ventral view of aedeagus; a, dorsal 
view of aedeagus; b, dorsal view of penis. 
14. Neomelicharia guttulata (Flatidae). Left side view of aedeagus; a, 
basal portion of penis; b, process bearing gonopore. 
15. Pyrella aberrans (Lophopidae). Right side view of penis. 
16. Aphana sp. (Fulgoridae). Ventral view of periandrium; a, lateral 
view of penis. 
17. Pyrella aberrans (Lophopidae). Right side view of aedeagus. 
18. Dictyophara nerides (Dictyopharidae). Left side view of aedeagus. 
19. Virgilia nigropicta (Lophopidae). Right side view of male genitalia; 
a, dorsal view; b, lateral view of penis. 
20. Vanua poyeri (Tropiduchidae). Left side view of male genitalia. 
21. Danepteryx sp. (Issidae). Right side view of aedeagus. 
22. Mindura obscurus (Riecaniidae). Left side view of penis. 
25. Eurynomeus granulatus (Achilidae). Left side view of aedeayus; a, 
dorsal view of penis. 
24. Gelastopsis insignis (Eurybrachidae). Left side view of genitalia; 
a, dorsal view of aedeagus. 
