1967] 
Emerson — Cretaceous Insects 
287 
veins vary considerably in some genera of Hodotermitidae. A vein 
joins the costal margin about 1.22 mm. from the suture but it is 
not clear whether this is the first superior branch of Rs or the end 
of one of the other branches of the radius. Clear superior branches 
of Rs occur about 2.63 mm., 3.88 mm., and 5.08 mm. from the 
suture, and secondary and tertiary branches occur in the apical 
fourth of the wing. The main stem of Rs ends well below the tip 
of the wing. In summary, seven and possibly eight branches of Rs 
reach the costal margin and tip of the wing. The width of the 
radial sector (Rs) and its branches in the outer fourth of the wing 
(figs. 1, 2) and the gradual divergence of the main stem of the 
radial sector from the costal margin are interpreted as generic and 
subfamily characters. The branches of Rs are more defined and are 
narrower than those of M and Cu. M branches into an upper and 
lower branch about 1.01 mm. from the suture, somewhat closer to 
the suture than in most termites, but the taxonomic significance 
cannot be interpreted without many more specimens. Five branches 
of M reach the lower margin in the apical half of the wing, but this 
character is almost surely variable within the species. The general 
position of M about half way between Rs and Cu is probably of 
generic importance and might even be of species importance. Cu is 
comparatively short, its longest branch ending close to the middle of 
the inner margin. The length of Cu is probably of species or generic 
importance. Cu and M emerge from the suture in a fan-like spread 
of veins, in this particular strikingly different from the sharply 
curved veins of Stolotermes. 
MEASUREMENTS OF THE FOREWING OF 
CRETATERMES CARPENTERI, NEW SPECIES 
Length of suture from costal to inner margin about 
Length of wing from costal end of suture 
Length of wing from inner end of suture 
Width of wing 
Widest width of radial sector 
Width between Rs and M near middle of wing 
Width between upper and lower branches of M in 
middle of wing 
Widest width between M and Cu about 1/3 length 
of wing from suture 
O.72 mm. 
7.23 mm. 
7.42 mm. 
2.23 mm. 
O.93 mm. 
0.39 mm. 
O.37 mm. 
O.44 mm. 
specimen : Holotype, right forewing and counterpart impressions, 
of Cenomanian age, at the border between Lower and Upper 
Cretaceous, in a bed of hard ferruginous argillite associated with 
