BY R. J. TILLYARD. 



885 



from the common stalk, the other much further distad. Cu la 

 fused with M 3+4 for a short distance, so that its basal portion 

 resembles a cross-vein. Cu lb ending up exactly upon the apical 

 angle of the clavus. On the clavus, 1A is waved and diverging 

 strongly from the vena dividens. 



Genot y p e, Eurymelidium australe, n . sp . ( Upper Triassic, 

 Ipswich, Q . ) 



Eurymelidium australe, n.sp. (Text-fig. 16). 



Total length of preserved portion of tegmen, 5 mm., represent- 

 ing a complete tegmen of about 5.5 mm. long. Greatest 

 breadth, 2 mm. 



The tegmen is closely pitted all over, the venation being fairly 

 strongly marked. There is a slight piece out of the costal mar- 

 gin near the middle, and a small part of the base is missing; 

 otherwise, the preservation is complete. The venational charac- 

 ters have been included in the generic definition. 



Type, Specimen No. 248a. (Coll. Queensland Geol. Survey). 



A comparison with Text-fig. lc will show the resemblance of 

 this fossil to the existing Australian genus Eurymela. 



Genus Mesojassus Till. (Text-fig. 17) . 



Mesojassus Tillyard, 1916 (8, p. 34). 



Sc slightly indicated as a separate vein running a little below 

 the costal margin. R, M and 0% united in a common stalk for 

 a considerable distance from base, Cuj coming off from it very 

 strongly, M as a weakly indicated vein at a considerably further 

 distance along it . R with no longitudinal branchings, but giving 



Text-fig. 16. 

 Eurymelidium ausirale, n.g. et sp. (x 13-3). 



For lettering see p. 895 



