Psyche 
[December 
162 
Cu parallel with the stem of M, dividing well before the origin of 
Rs; CuA diverging towards M and connected to it by a short con- 
necting vein; in its further course, CuA parallel with MP; both 
cubital branches sigmoidal, directed almost perpendicularly to the 
posterior margin ; area between CuA and CuP not broadened ; four 
anal veins, arising independently from the base, arched, rarely 
branched; cross veins numerous, forming a reticulation in radial, 
medial, cubital and anal areas; several supporting cross veins radi- 
ating from Rs to Ri and from Rs to MA in about the level of the 
origin of the first branch of Rs; intercalary sectors well developed 
in the radial area. 
Moravia differs from Calvertiella in the broader and shorter fore 
wing; Sc is shorter, Rs gives off four main branches, the cuticular 
thickening is arched, M does not touch R, MP is forked three times, 
CuA does not fuse directly with M and the cross veins and reticu- 
lation are much more dense. 
From Moraviptera Kukalova ( 1 955 ) 4 , which is apparently a hind 
wing, it differs in the broader wing, a broader area between MP 
and CuA and in presence of more numerous cross veins and a 
denser reticulation. 
Moravia is in many features the most specialized of all the genera 
of Calvertiellidae, known so far. Its cuticular thickening is highly 
convex, and continues as a convex connecting vein, forming a trans- 
verse “bridge” between R and CuA. It may have had a function 
like the arculus in Recent Odonata. The function of the radiating 
cross veins near the origin of R4 + 5 was probably that of support. 
Both fore and hind wing of Moravia are known. Coloration in 
the fore wing is absent, but in the hind wing there are irregular 
pigment spots. The wings differ also little in length, and their 
venational patterns are very similar. It is impossible to determine 
whether the fore and hind wings belong to one species, but they are 
here treated as such. 
Stratigraphic occurrence: Lower Permian (Upper Autunian) of 
Czechoslovakia. 
Type-species: Moravia convergent n. sp. 
Moravia convergens n. sp. 
Text-figures 2, 3, 4B, 4C; plates 20 and 21. 
Fore wing: 38 mm long and 15 mm broad, about 2.5 times 
4 In the figure of Moraviptera reticulata Kukalova, (1954, p. 548, fig. 3) 
the origin of Rs is not correctly shown; it arises directly from R, just before 
the forking of M. 
