66 



CLAUDE FULLER. 



Microcerotermes sj). 



In the particular species under reference the wings may be 

 said to have specialised towards a more or less fixed venation. 

 The diversities although small are still frequent. The radius 

 is always simple. The media may be simple or furcate or 

 further subdivided. In 24 Avings it supported the margin at 

 four points in 1, at three in 7, at two in 12, and at one in 4. 

 The oifsets of the cubitus are, on the whole, simple; one of 

 the series may, however, be furcate. The number of offsets 

 ranges from 8 to 12, the average and common number being 

 10. None of the wings of this Microcerotermes showed 

 any abnormality (24 examined) ; but, from those of a smaller 

 species,^ the media was often absent. 



Microtermes sp. 



In this species, of which 10 wings were examined, the 

 media was usually furcate. In 5 the prongs were short, in 

 the others more profound. When this latter condition occurs 

 each prong may be more or less subdivided, so that the 

 media may support the margin at 2, 3, 4, or 6 points. 

 Occasionally the diversity of the venation is added to by 

 the branches of the media crossing the cubitus. The offsets 

 of the cubitus are on the whole simple ; in 5 of the 10 

 wings, 1 furcate offset was found. In the 5, where all 

 were simple, the number present ranged from 10 to 13. 



' Probably M. zuluensis Hohiuj. 



