N I : UKOPTEKA TE KMITINA. 1 07 



from opposite the base of two of the later branches which strike the apex 

 of the wing, diverging from the main vein no more than the superior 

 branches. Externomedian vein also running parallel to the costal margin 

 throughout the greater part of the wing, and not so far removed from the 

 scapular as the latter is from the costal margin ; it has four or five simple or 

 forked branches, mostly arising in the basal third of the wing, and with these 

 branches takes a remarkably longitudinal course obliquely toward the hind 

 margin and parallel to the inferior apical branches of the scapular vein ; it 

 therefore occupies the greater part of the wing. The internomedian vein is 

 reduced to a very contracted area, consisting apparently of only a single 

 forked vein or two in the narrowing basal part of the wing. The feeble char- 

 acter of the externomedian and iuternomedian veins, ;is well as of the inferior 

 branches of the scapular vein, prevents their preservation on most of the 

 fossils, and it is only in a few specimens that the whole or nearly the whole 

 can be made out. There is apparently no net-work or reticulation anywhere 

 on the membrane of the wing. The abdomen is large and ovate, generally 

 broader than the rest of the body. 



This genus, which is most nearly allied to Termopsis and Calotermes, 

 differs from each of them in points wherein they differ from each other, and 

 has some peculiarities of its own. It differs from Calotermes in its shorter 

 wings (relative to the length of the body), which lack any fine reticulation, 

 and in its want of ocelli. From Termopsis it differs in its slenderer but yet 

 shorter wings, without reticulation, its uniform scapular vein running par- 

 allel to the costa throughout and provided with fewer and straight branches. 

 From both it differs in the presence of distinct inferior branches to the 

 scapular vein, but especially in the slight development, of the internomedian 

 vein, the excessive area of the externomedian vein, and the course of the lat- 

 ter, which is approximated much more closely than usual to the scapular 

 vein and emits branches having an unusually longitudinal course. These 

 last peculiarities also separate this genus still more widely from Hodotermes, 

 with which it agrees pretty closely in many points, and in which Hagen 

 places most of the larger Termitina described by Heer from the European 

 Tertiaries, although they do not appear to agree with the characteristics of 

 the genus as given by him, and certainly approach in some of theif features 

 the peculiarities of the present genus. It is, however, impossible from 

 Heer's figures alone to judge whether they are really more closely allied 



