94 
Psyche 
[June 
Genus Phyllelytron, new genus 
Fore wing: tegminous, darkly pigmented; sutural margin narrow; 
tubercles distinct in the anal area or in the whole posterior part of 
the wing, flat; granulation dense, distinct on the whole wing surface; 
costal expansion of circular shape, strongly projecting; apex directed 
posteriorly, pointed, apical part only little prolonged; anterior mar- 
gin convex; veins not running parallel, branches of R, M and CuA 
usually indistinct; Sc sending off 2 or more long parallel branches, 
with numerous veinlets ; R sending off anteriorly a series of irregular, 
slightly oblique, weak branches; M and CuA of various forms, 
branched; CuP long, slightly concave, usually branched; anal veins 
broad, 4-5 in number, some of them directed anteriorly; cross veins 
numerous, irregular. 
Relationship. Phyllelytron , n. gen., differs from Protocoleus Till- 
yard in the less prolonged apex, more irregular branches of veins 
(mainly R), less distinct veins, less numerous tubercles restricted 
mainly to the posterior half of the wing, not regularly arranged; 
granulation more coarse and cross veins more irregular. Phyllelytron , 
n. gen., differs from Austrelytron j n. gen., in the more richly branched 
veins and more numerous cross veins, smaller number of anal veins 
and flat tubercles, which are absent on the veins. 
Stratigraphic occurrence: Upper Permian of Australia (N.S.W.) 
Type-species: Phyllelytron folium n. sp. 
Phyllelytron folium, n. sp. 
Text-figure 1 
Fore wing: 21-24 mm. long, 6. 2-7. 8 mm. broad; sutural margin 
relatively narrow; tubercles distinct in the anal area, in the other 
parts of the wing almost missing; granulation fine, costal expansion 
markedly projecting, circular; anterior margin strengthened; pos- 
terior margin slightly concave, with small concavity in the anal part; 
branches of R indistinct, irregular, connected with few cross veins; 
Relationship. Phyllelytron folium , n. sp., differs from P. petalon, 
n. sp., in the more regular, less numerous cross veins, in the absence 
of dark color spots in the proximal half of the wing and in the 
equally dark-pigmented veins. In comparison with P. granulatum, 
n. sp., it has a more projecting costal expansion, smaller and less 
coarse granulations, more distinct tubercles and no dark spots* From 
P. melinum, n. sp., it differs in its shorter, broader and probably 
thinner tegmen, narrower sutural margin and more projecting costal 
expansion. 
