278 
Psyche 
[December 
by the radial sector (Rs) in the outer fourth of the forewing with 
the innermost branch joined to the inner margin near the wing tip 
(figs. 1, 2) is found only in some of the subfamilies of the Hodoter- 
mitidae. The relatively short cubitus (Cu) and the reticulations in 
the wing membrane between the veins are also in conformity with 
some subfamilies of the Hodotermitidae. 
These combined characters of the forewing eliminate all other 
known families of termites. It should also be pointed out that this 
wing venation is associated with characteristic dentition of the imago 
mandibles, the lack of ocelli, more than two articles in the cerci, to- 
gether with numerous other characters in more completely preserved 
fossils and living species of the Hodotermitidae. It is postulated 
(Emerson, in press) that an unknown ancestral group possessed the 
ocelli of the Mastotermitidae, Rhinotermitidae, and Termitidae, the 
dentition of the imago mandible close to that of Archotermopsis and 
the cockroaches, and a still more ancestral group probably possessed 
the anal lobe of the hind wing of the Mastotermitidae. Without 
preserved characters of the head, pronotum, legs, and abdomen of 
Cretatermes carpenteri, all that can be said at present is that this 
species most probably belongs to the Hodotermitidae. It is antici- 
pated that this taxonomic assignment will be verified with the dis- 
covery of more specimens from the same deposit or of related species 
from other localities and strata. 
Subfamily Cretatermitinae, new subfamily 
In the early stages of this investigation, the author was loath to 
erect a new monotypic subfamily on the basis of a single fossil fore- 
wing, and he still has misgivings. However, he thinks that the 
tentative assignment to the new subfamily Cretatermitinae is the 
best nomenclatural and bibliographic symbol to handle the compara- 
tive data available. No other known subfamily of the Hodotermitidae 
has the combination of diagnostic characters illustrated in figs. T , 2, 
and 3. These include: (1) the evenly curved humeral suture,' (2) 
the greater length of the wing from the inner end of the humeral 
suture than from the costal end of the humeral suture; (3) the small 
size of the forewing; (4) the relatively wide wing in proportion 
to its length; (5) the gradual increase in the width of the area 
occupied by the radial sector (Rs) from the base to the apical fourth 
of the wing; (6) the branching of the media (M) in the basal 
fourth of the wing; (7) the position of the media (M) about half 
way between the radial sector (Rs) and the cubitus (Cu) ; and 
(8) the short cubitus (Cu) not reaching beyond the basal half of 
