4io 
Psyche 
[December 
nearly so, although the wing of Pseudo gramma (Permian, USSR) 
is slightly concave towards the base. The radial sector of P. readi 
arises well before the end of Sc, as in P ermobiella; only its basal 
stem is perserved in that region but it is distinct again at about the 
level of the termination of the subcosta. The forking of Rs is very 
clear, forming three terminal branches, as in P ermobiella. Between 
the branches of Rs and between R4 + 5 and MA there is an align- 
ment of cross veins, forming a weak, irregular vein which extends 
only a short distance back from the wing margin. Similar irregular 
veins are found in some Caloneurodea previously described, such as 
Penuobiella , Caloneurella and Apsidoneura. M and CuA are 
anastomosed towards the base of the wing, as in other Caloneurodea; 
the forking of M is not preserved but the two branches are preserved 
beyond the middle of the wing. CuA has the characteristic form 
of that of other Caloneurodea; between it and MP3 + 4 there are 
a couple of large cells formed by cross veins, very similar to those 
in P ermobiella. CuP is close to CuA, and the anal veins are more 
remote from each other. The cross veins are preserved only in 
pigmented portions of the wing; they are almost as numerous as 
those in P ermobiella. 
The hind wing, although about the same size as the fore wing, 
seems to have a somewhat different shape; the anterior margin is 
slightly arched. The venational pattern is basically like that of the 
fore wing, including the presence of the irregular secondary veins 
between the branches of the radial sector. An additional anal vein 
is visible in one of the hind wings. 
The venational pattern of the wings, with restoration of some 
of the missing portions, is shown in Figures 3 and 4. 
Several body structures are preserved in the fossil. The abdomen, 
however, is completely absent in the half of the specimen which 
was collected; it probably was included in the counterpart. The 
mesothorax (Figure 5, M) and metathorax are clearly preserved, 
the mesothorax being somewhat the larger (1.5 mm length and 
width as compared with 1.2 mm for the metathorax). These are 
almost circular, as they are preserved in the specimen. The pro- 
thorax (P) has been broken away from the mesothorax and rests 
to the right side of the mesothorax (as preserved) ; attached to the 
prothorax are portions of two front legs (L). The pro thorax is 
1 mm wide and .7 mm long. The head (H) is in the normal 
position with respect to the rest of the insect; it is 1 mm long and 
1.3 mm wide. Two slight bulges on each side may represent the 
