1970] 
Kukalova — Palaeodictyoptera 
15 
Figure 56. Stenodictya laurentiauxi sp. nov. ; head, ventral view. P, 
surface of palpus, enlarged. 
of the Palaeodictyoptera, Stenodictya, in a previously unstudied 
specimen which he found in the collections of the Sorbonne in Paris 
(subsequently deposited in the Institut). 
Laurentiaux called attention to the similarities of the structure 
of the mouthparts of this specimen to that of Eugereon boeckingi 
Dohrn, from the Permian of Germany. He correctly concluded 
that the specimen as preserved shows the head and mouthparts from 
the ventral surface. Of all the specimens which I have seen, this 
is the only one showing the ventral view of the beak. The long 
palpi can be seen to arise beneath the stylets (more probably under 
the inner pair), which explains their close position to the base of the 
outer stylets when the beak is observed from the dorsal view in 
other specimens. The base of the beak itself is very indistinct so that 
other structures, such as the labium, cannot be distinguished. From 
my examination of the wings and body structures of the specimen 
which Laurentiaux described, I am convinced that this cannot be 
referred to lobata or spinosa and that it represents still another 
species. The formal description of this species, which I have the 
pleasure to name for Dr. Laurentiaux, Professor of Geology at 
Reims, is as follows: Fore wing length 64 mm, width 17 mm. 
Anterior margin convexly curved at the base, then straight; posterior 
margin with a slight indentation at MP. Apical part broad, apex 
