440 
Psyche 
[December 
phlebia has already been synonymized with Homoioptera by Lameere 
( I 9 I 7> P- I5 1 ); and Anthracentomon, on the basis of Handlirsch’s 
figures, is also considered a synonym of Homoioptera. 
The present revisional study of the Commentry material has 
brought new aspects to the family classification of the Paleodictyop- 
tera. The family Homoiopteridae now appears to include several 
genera from localities other than Commentry. Three families, Roech- 
lingiidae, Scepasmidae and Thesoneuridae, seem to be synonymous 
with the Homoiopteridae; and the relationships of the Homoiop- 
teridae with the Graphiptilidae, Breyeriidae and Lycocercidae have 
become more obvious. 
The wings of the Homoiopteridae, as here treated, are the largest 
known in the Palaeodictyoptera. They are characterized especially 
by the following four features: (i) stems of main veins with a 
more or less pronounced bend in the basal third of the wings; 
(2) MA either simple or with very short branches and CuA always 
with branches (usually short ones) ; (3) CuA and CuP tending to 
be parallel to each other; and (4) a sclerotized strip with tubercles 
lying along the costa, just posterior to it. The cross veins are nu- 
merous, irregular and often connected. 
The bending of the main veins basally is present in Homoioptera, 
Boltopruvostia , and to a lesser extent in Thesoneura; it also occurs 
in the related family Lycocercidae. MA is simple or has a little 
fork in Ho?noioptera (see left wing of the type specimen) and in 
Thesoneura ; it gives rise to very short branches in Boltopruvostia 
(see B. nigra Kukalova, 1958). It is simple in the Breyeriidae but 
has a very short branch in Graphiptilus (type specimens of heeri). 
The branches on CuA are very short in Ho?noioptera and Bolto- 
pruvostia , longer in Thesoneura and completely reduced in Lyco- 
cercidae. In the Breyeriidae (B. boulei) and in Graphiptilus (G. 
heeri, specimen 19-12) CuA forms a short branch. The tendency 
for CuA and CuP to be parallel is a very persistent feature, com- 
mon in all Homoiopteridae and noticeable also in some Lycocercidae 
( L . pictus), Graphiptilidae (Rhabdoptilus) and some Breyeriidae 
(B. barborae). The cross venation of Homoiopteridae and related 
families is very characteristic; it is readily distinguished from the 
more regular and rarely anastomosed venation of spilapterids and 
from the denser and usually relatively coarser pattern of the dic- 
tyoneurids. 
From the foregoing account, it can be deduced that within the 
Homoiopteridae and related groups the branches of MA and CuA 
