518 AUSTRALIAN TERMITID.f:, 



ii. Subfamily RHINOTERMITIN^. 



Scapular shield broad, slightly convex at the cross suture, with 

 four branches. Costal and subcostal nervures very stout, running 

 to the tip of the wing, and joined at the extremity with short 

 irregular thick nervures; median and suljmedian nervures slender, 

 with a great number of fine oblique nervures, and all the wing 

 thickly covered with fine furrows. 



1. Genus Rhinotbrmes. (Recent.) 



Head broad; eyes small, projecting and coarsely faceted; ocelli 

 small; antennse 20-jointed; prothorax not as wide as the head, 

 rounded in front. 



iii. Subfamily GLYPTOTERMITIN^. 



Scapular shield slender, angular, with the cross suture trans- 

 verse, with four or more branches. Costal and subcostal nervures 

 running very close to each other, the latter often merging into 

 the former in the centre; median nervure running through the 

 upper half of the wing, and the submedian about the middle, the 

 latter and the oblique nervures often formed of fine spots or scars. 



1. Genus Glyptoteemes. (Recent). 



Head broad, rather flat and quadrate; eyes moderately large, 

 slightly projecting, coarsely faceted; ocelli rather large, close to 

 the eyes; prothorax long, broadest and concave in front, rounded 



on the sides 



2. Genus Heterotermes. (Recent.) 



Head very large, longer than broad; eyes small, not projecting; 

 ocelli wanting ; antennise 16-jointed; prothorax quadrate, with 

 base and apex arcuate. 



iv. Subfamily TERMITIN^. 



Scapular shield angular, slightly rounded above but transverse 

 below, showing four branches. Costal and subcostal nervures 

 running parallel, but widely separated from each other; median 



