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Dermelytron pigmentatum, n. sp. 
Text-figure 12 
Fore wing: about 6.3 mm. long and 2.4 mm. broad, with a darker 
spot in the apical part, and along the anterior margin; apex pointed. 
Relationship. Dermelytron pigmentatum , n. sp., differs from D. 
conservativum , n. sp., in the presence of the darker spot, less oval 
shape and pointed apex. 
Holotype: No. In 45474 (obverse), British Museum (N.H.) 
London. Collected in Upper Permian, Belmont, N.S.W. 
Genus Psychelytron, new genus 
Fore wing: convex, but thin, very weakly sclerotized; sutural mar- 
gin narrow; costal expansion unknown; apex directed anteriorly; an- 
terior margin strengthened, convex; posterior margin concave. 
Relationship. Psychelytron , n. gen., differs from Dermelytron , n. 
gen., and Chanos elytron, n. gen., by the presence of the anteriorly 
directed apex. 
Stratigraphic occurrence: Upper Permian of Australia (N.S.W.) . 
Type-species: Psychelytron progressivum, n. sp. 
Psychelytron progressivum , n. sp. 
Text-figure 13 
Fore wing: about 8 mm. long and 2.8 mm. broad, uniformly dark- 
colored; apex pointed, placed about in the longitudinal axis of the 
wing; posterior margin slightly concave in the anal area. 
Holotype: No. In 45900 (obverse). British Museum (N.H.), 
London. Collected in Upper Permian, Belmont, N.S.W. 
Genus Chanoselytron, new genus 
Fore wing: only slightly convex, thin, relatively narrow; sutural 
margin narrow; costal expansion relatively large, rounded, extending 
beyond the wing proximally; anterior and posterior margins almost 
parallel; apex directed distally. 
Relationship. Ghanoselytron, n. gen., differs from Dermelytron, n. 
gen., in the larger costal expansion and relatively narrow wing with 
anterior and posterior margins almost parallel. From Psychelytron, n. 
gen., it differs by the posteriorly directed apex. 
Stratigraphic occurrence: Upper Permian of Australia (N.S.W.). 
Type-species: Chanoselytron gingiva , n. sp. 
