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Carpenter — Fossil Insects 
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tinct processes extend beyond the end of the abdomen between the 
cerci ; their exact nature is not clear but they are probably homologous 
to similar structures observed in the spilapterid Dunbaria fasciipennis , 
from the Lower Permian of Kansas (Figure 3) 3 . Presumably these 
processes are ventral to the cerci. 
Family Eugereonidae 
The type genus of this family, Eugereon, is known only from 
the Lower Permian of Germany but Dictyoptilus and Peromaptera 
are known from the Upper Carboniferous of Commentry in France, 
and V aid eania is known from the Upper Carboniferous of Portugal 
(Kukalova, 1969). The fore wings in this family were long and 
narrow, with a dense pattern of cross veins, often forming a coarse 
network; the hind wings were at least considerably shorter and had 
a modification of the venation basally. 
I have assigned the specimen from the Sandia Montains in New 
Mexico to this family, placing it in the following new genus. 
Genus Sandiella, new genus 4 
Fore wing similar to that of Dictyoptilus but with a much coarser 
reticulation of the cross veins and without the rows of regular cross 
veins, mainly unbranched, between the radial sector and Rl, and 
between Rl and Sc; the subcosta terminates well before the apex 
of the wing rather than almost at the apex as in Dictyoptilus. The 
hind wing is unknown. 
Type species: Sandiella readi , n. sp. 
Sandiella readi, n. sp. 
Figure 4B 
Fore wing: length, as preserved, 40 mm; estimated complete 
length, 60 mm; width, 10 mm. Rs with seven main branches 
(branching probably variable within the species) ; MP with four 
branches, as in sepultus ; cross veins numerous, irregular, and forming 
a coarse reticulation over most of the wing. Venational details are 
shown in Figure 4B. The species is named for Dr. ! C. B. Read, 
who, over a period of years, has sent me many fine Paleozoic insects. 
Holotype No. 170364, U. S. National Museum, collected by Dr. 
C. B. Read in 1941 in the Sandia Formation on an exposure on the 
north side of Santa Fe Creek in the eastern suburbs of the city of 
3 I am indebted to Dr. Jarmila Kukalova for permission to use this un- 
published figure of Dunbaria. (See also Kukalova, 1971). 
The name of the genus is derived from that of the Sandia Mountains 
in New Mexico and is considered feminine. 
