292 
Psyche 
[December 
Figure 18 . Herdina tnirificus, n.sp. Drawing of fore and hind wings 
of holotype. 
halves of the specimen, (figures 15 and 16), the counterparts appear 
to be very different. The reverse (figure 15, with the subcosta con- 
vex) shows the wings and thorax clearly; there is a large pronotum 
expanded into a dorsal shield, not unlike that known in some other 
Protorthoptera ; only one side of the shield is preserved in the speci- 
men. The pronotum and the rest of the thorax are apparently 
strongly sclerotized; the other thoracic and the abdominal segments 
are apparently preserved in a somewhat twisted position, so that 
parts of a pleuron and of the tergum of each segment are visible. 
The full size of the abdomen is not indicated in the reverse but is 
shown in the obverse (figure 16). 
The wings are very clearly preseved in the reverse. They are not 
so distinct in the obverse but their convexities or concavities are 
very clear. In the reverse half, all of the veins, including the cross 
veins, possess prominent pits or depressions, these being almost con- 
tiguous along the veins; they are especially evident in the reverse 
half, where the pits are filled with a white matrix (figure 20). In 
the obverse, which represents the wing as seen from above, the struc- 
