UV R. J. TILLYAR0. 



875 



forked near half-way, and the short basal piece of Cu la visible 

 above the secondary cubital fork suggests that the venation of 

 this part of the tegmen may have resembled somewhat that of 

 Mesoscytina. Cu lb is a short, straight vein which descends to 

 meet the vena dividens at the apex of the clavus. 1A and 2\ 

 are both well marked, curved veins. The anal angle is well 

 rounded. 



Text-fig. 8. Triassoscarta subcostalis, n.g et sp. (x 7-5). For lettering 



see p. 895. 



Text-fig. 9. Permoscarta mitchelli Till, (x 8-3). For lettering see 



p.895. 



The tegmen appears to be of a leathery nature, finely and 

 closely pitted all over. 



Type, Specimen No. 116a. (Coll. Queensland Geol. .Survey). 

 Horizon: Upper Triassic, Ipswich, Q. 



Genus Permoscarta Till . 



We figure the tegmen of Permoscarta mitchelli Till, in Text- 

 fig. 9, for comparison with that of Triassoscarta subcostalis, 

 n.sp. The genus comes from the Upper Permian of Newcastle, 

 X.S.YV. (9, p. 726). The chief differences between the two types 

 are given in the generic key above. We may note, in addition, 

 that the radius of Triassoscarta arches strongly upwards near the 



