io8 
Psyche 
[June 
(1917). The length of the specimen is 32 mm. and its width 19 mm. 
Comparing this fragment with the corresponding part of the com- 
plete wing of D. sepultus (Meunier), I estimate that the fragment 
is about 1/5 the total wing length, indicating that a complete wing 
of reuaulti would be about 160 mm. long. 
Dictyoptilus sepultus (Meunier) 
Plate 13, Fig. A; Plate 14 
Cocker ellia sepulta Meunier, 1910, Ann. Soc. Sci. Brux., 34:195; Meunier, 
1910, Mus. Hist. Nat., Bull. 16:235, fig. 3. 
Cockerelliella sepulta, Meunier, 1912, Ann. Paleont., 7:6; pi. 6, fig. 4, 4a. 
Dictyoptilus sepultus, Lameere, 1917, Mus. Nat. Hist. Natur., Bull., 23:160. 
This species is based on a single, excellent fossil, consisting of a 
complete fore wing; the veins and cross veins are very clearly pre- 
served. In one counterpart (the obverse, with Sc concave) the distal 
third is missing but the rest is exceptionally clear; in the reverse, 
the basal quarter is missing but the distal portion is very well pre- 
served. Figure A, plate 13, is a drawing of a complete wing, based on 
the two counterparts. The total wing length is 106 mm., which is 
about 50 mm. less than the wing length of renaulti. The wing of 
sepultus has a maximum width of about 20 mm. The venation presents 
no problems in homology, the convexities and concavities being strong- 
ly indicated. There are two noteworthy aspects of the venation, how- 
ever. ( 1 ) M arises as an independent vein at the wing base, but 
shortly diverges anteriorly and continues in contact (but not anas- 
tomosed) with R for a short distance, forming a double vein; it then 
separates off as an independent vein. (2) Cu at its base is directed 
anteriorly but shortly runs parallel with R + M, and then divides 
into CuA (■+) and CuP ( — ). CuA diverges anteriorly at this 
point, touching, but not anastomosing, with M before diverging away 
again. These unusual features are duplicated in Eugereon, as noted 
below. 
Lameere (1917, p. 160) has stated that there is a small precostal 
space at the base of the wing. A slight thickening of the wing is 
visible at the base, but I am not convinced that it is actually a pre- 
costal area. Lameere also states that the subcosta terminates well 
before the wing apex, as it is shown in Meunier’s figure (1910) and 
also in Handlirsch’s (1919). Laurentiaux (1957) in an original 
figure shows Sc extending a little further than indicated in the pre- 
vious figures. I am convinced from my study of the fossil (as well 
as of the type of peromapteroides ) that Sc extends even further to- 
wards the apex; at any rate, it is still identifiable as a distinct vein 
up to that point (See plate 14). 
