1964] 
Kukalovd — Calvertiellidae 
163 
longer than broad. Coloration completely absent; postcostal area 
short and indistinct; length of Sc slightly variable, as well as the 
length of the forks on Rs and MP, the width of area between MP 
and CuA, and the curvature of the anal veins. 
Hind wing: about 43 mm long and 20 mm broad, about 2.1 times 
longer than broad; triangular in shape. Postcostal area broad and 
long, with a series of short branches directed towards costa; irregular 
colored spots concentrated mainly in the posterior half of the wing; 
fork on the first branch of Rs relatively broad, as well as the fork 
on MP; area between CuA and CuP not very wide, but area 
between CuP and iA broad; anal veins arising mostly independently 
from the base, curving slightly backwards; first two anal veins 
simple, the third one with a long fork, the fourth simple; reticula- 
tion dense, filling the area between CuP and iA and the anal veins. 
Holotype (fore wing): No. 1/1965, Department of Palaeonto- 
logy, Charles University, Prague; collected by Anna Havlatova in 
Lower Permian shales (Upper Autunian) , Obora, Moravia, Czecho- 
slovakia. 
Paratype (hind wing) : No. 3/1965; collected by Jarmila Kuka- 
lova, at the same locality. 
Another specimen of a fore wing (No. 2/1965), showing the basal 
part of the wing especially clearly, also collected at the Obora 
locality. Its venation is very similar, even in detail, to that of the 
holotype. 
The holotype specimen was apparently distorted in preservation 
in much the same way as the type of Calvertiella. The wing is 
broken along Sc and the costal area has shifted towards R, while 
the anal area is drawn anteriorly across the stems of Cu and A. 
Nevertheless, the independent nature of the stems of the main veins 
can be seen. In text-figure 2, the veins have been restored to 
their original positions. The dotted lines representing the stems of 
Cu and A have been restored on the basis of those clearly preserved 
in specimen No. 2/1965. 
Discussion : One of the remarkable features of Moravia is the 
peculiar cuticular thickening, which conceivably acts as a support 
between R and M at a point where most of the veins of the wing 
actually diverge. It is clearly developed in Calvertiella (see text- 
figure 4A), although very short — probably because of the close 
proximity of R and M + CuA at this point. It is more extensive 
in the fore wing of Moravia convergens , and much more so in the 
hind wing. In both wings the cuticular thickening is slightly curved 
