24 
cell in common with Subcosta and parts from this common stem at 
about 1 mm from base. Médius has a longer basal stem, and whilst its 
anterior branch only once bifurcates, its posterior branch ends in 6 
(7) branches. Cubitus is also bifurcate, and its ramification takes 
place a little more distally than that of. Médius, its anterior branch 
alone once more bifurcates and ends in 3 (4?) branches. Thus Cubitus 
is more scantily ramificated than Médius. 29 veins in all are counted 
along the margin from the end of Costa to the beginning of Clavus. 
Along the apical margin there is a row of cross-veins extending over 
11 vein intervals. Further inwards there is an a little shorter series 
of cross-veins, and at about the middle of the wing a few cross-veins 
forming a third series are seen. In this last series there are perhaps 
more cross-veins than the three drawn by me, I have namely only 
drawn those which I was sure to know to exist. Length of wing 
13.5 mm. 
1 specimen. Struer, (poss. Min. Museum). 
Eoricania n. g. danica n. sp. 
In the fragment of a wing, seen tig. 13, fortunately so much of 
Clavus has been preserved that we are able to identify it as origin¬ 
ating from a Ricaniid and not from a Flatid. 
As shown in the little sketch to the left showing the claval part of 
a recent Ricaniid wing, the members of the family of Ricaniidœ have 
a characteristic course of the 2 anal veins which form a Y, with the 
peduncle pointing outwards. It may be supposed in advance that A 2 
in these recent forms has been secondarily obliterated proximally as 
it does not issue from the base of the wing as all longitudinal veins 
primarily do. The Eocene specimen at hand in this respect displays 
a more primitive feature, in as much as the 2 anal veins also join 
proximally, thus enclosing an elliptic cell, a character of generic value, 
on which I have established the genus Eoricania. The genus Ham- 
