1964] 
Carpenter — Dictyoptilus 
105 
anal veins arising from one stem. Cross veins numerous, forming a 
reticulation in some areas of wing. 
Hind wing: shape apparently as in fore wing; Rs diverging away 
from R 1 after its origin ; base of M apparently independent of R, 
curved ; MA arising at about level of origin of Rs, ending at the 
position of termination of CuA in fore wing; CuP forking into at 
least 4 terminal branches; CuA strongly curved. 
Body structure (known only in Eugereon ) : head small, with 
slender haustellate beak [For details of body structures see Dohrn, 
1867; Handlirsch, 1906]. 
This family is represented in the Commentry shales by the single 
genus Dictyoptilus. 
Genus Dictyoptilus Brongniart 
Dictyoptilus Brongniart, 1893, Recherches Hist. Ins. Foss.:390; Handlirsch, 
1906, Foss. Ins. :66; Lameere, 1917, Mus. Nat. Hist. Natur., Bull., 23:103 
Cockerellia Meunier, 1908, (non Cockerellia Ashmead, 1898), Ann. Soc. 
Sci. Brux., 3 2 :154 
Cockerelliella Meunier, 1909, Ann. Paleont., 4:132 
Fore wing: long and slender, the length more than five times the 
width ; posterior margin with two slight indentations, one near R5 
and the other near the end of the posterior branch of MP2. Sc ex- 
tending almost to wing apex, Ri terminating at very apex; Rs and 
MA arising at about the same level ; Rs with five or more branches ; 
MP dividing into MPi and MP2 directly after its origin; CuA 
diverging towards M, as characteristic of the family, and either 
touching or not quite touching M ; cross veins numerous ; those in 
the costal and subcostal areas straight and unbranched ; those in 
other areas straight or reticulate, forming a coarse, irregular network 
in many parts of the wing. 
Hind wing: known only in D. peromapteroides (Meunier) ; shape 
apparently as in fore wing, with a slightly broader base ; space between 
Rs and MA much broader than that between MA and MP. 
Body unknown. 
Type-species: Dictyoptilus renaulti Brongniart, 1893 (by mo- 
notypy) . 
The generic characteristics suggested above are tentative, since 
only one other genus, Eugereon , is known in the family, and since only 
the basal parts of the wings are known in that genus. 1 Dictyoptilus 
The Commentry genus Archaemegapt'lus Meunier (1908), which Lameere 
(1917) considered close to Dictyoptilus , seems to me to require family sep- 
aration; the wing is relatively broad and lacks the basal divergence of CuA. 
The family Archaemegaptilidae, established by Handlirsch (1919, p. 13) 
for this genus, appears to be valid. 
