28 o 
Psyche 
[December 
middle of the wing or may be closer to Cu than to Rs; and Cu has 
from 5-12 primary branches, the longest extending from about half 
to four-fifths the length of the wing from the base. The reticulations 
of the wing membrane do not differ diagnostically from Cretater- 
mitinae, and the inner margin of the wing of the Porotermitinae is 
longer than the costal margin from the suture in both subfamilies. 
Sc, Ri, R 2 , R 3 , or R2 + 3 vary in the Porotermitinae and may 
not be diagnostically different from this obscure region of the fore- 
wing in the single fossil specimen of Cretatermitinae. In the Poro- 
termitinae there may be as few as two branches of the radius emerging 
from the suture, or there may be a full complement of Sc, R 1? R 2 , Rs, 
and Rs at the suture, thus illustrating the extreme variability of 
these veins in some species and genera of primitive termites. 
In an occasional rather exceptional wing, M may have branches 
that invade the normal position of Rs, and in such cases the superior 
branches of M may be as strong as those of Rs and may also reach 
the costal margin of the outer portion of the forewing. Again, this 
illustrates the great variability of the venation of these primitive ter- 
mites and the difficulty of making definitive comparisons. In spite 
of this degree of variation, however, the general pattern is sufficiently 
correlated with other characters to indicate valid taxa from the spe- 
cies to the family. 
The Stolotermitinae is a subfamily based upon a single genus with 
six described species, one from temperate South Africa, one from 
New Zealand, one from Tasmania, one from temperate southeastern 
Australia, and two (possibly only one) from tropical eastern Aus- 
tralia. 
The dentition of the mandibles of Stolotermes is of a very primitive 
type with strictly homologous teeth to those of cockroaches (Ahmad, 
1950), and is only slightly advanced in a few particulars from that 
of Archotermopsis (Termopsinae) and Ulmeriella ( Hodotermitinae) . 
The reticulations of the forewing are not diagnostically different 
from Cretatermes ; the humeral suture of the forewing is fairly 
straight or convexly curved in contrast to the concave curve of the 
humeral suture of Cretatermes (fig. 3) ; the humeral suture slants 
backward at a sharp angle from the costal to the inner margin ; the 
veins from Rs to Cu are bent or curved down toward the inner 
border near the suture (Hill, 1942, fig. 1); the costal margin of 
the forewing is much shorter than the inner margin from the humeral 
suture to the tip ; the shape of the wing may be similar to that of 
Cretatermes or a little longer compared to width; the linear length 
