BY R. J. TILLYARD. 



889 



high ridge, the impression is actually a mould of a left teginen, 

 and the pits of the clavus appear as slightly raised tubercles. 

 Type, Specimen 191a, (Coll. Queensland Geol. Survey). 



Unnamed Claval Areas. 



Amongst the fossil Homoptera dealt with in this paper, there 

 are five portions of tegmina consisting chiefly or entirely of the 

 claval area, which are worth figuring, though they cannot be 

 named. These are Specimens No. 109a, 163, 172a, 247 a-b and 

 257b. 



Specimen No. 109a is shown in Text-fig. 19. It is portion 

 of the clavus of a very large tegmen, the fragment measuring 



Text-fig. 19. Specimen No. 109a. (x 6-7). 

 Text-fig.20. Specimen No. 163. (x6.7). 



10.5 mm. in length, so that the complete clavus must have been 

 at least 12 mm., and the tegmen probably 15 mm. or more in 

 length. The specimen is a mould, showing only the vein 1A 

 strongly impressed upon a tough, leathery clavus with shallow, 

 irregular pitting and considerable pigmentation in the form of 

 large, dark patches of irregular shape. 2 A is absent; hence it 

 is possible that it belonged to a large Cercopid. 



