380 MESOZOIC INSECTS OF QUEENSLAND, vi., 



branches of R in all, as far as preserved. The veins below R 

 appear at first sight to be very well preserved, but it is nob 

 possible to determine the more basal portions of M and Cu with 

 certainty. Intercalated veins are quite absent in the region of 

 R, but are present between every pair of veins in the regions of 

 M and Cu, and are very clearly marked. This character has 

 suggested the specific name. 



Type, Specimen No. 262. (Coll. Queensland Geological 

 Survey). 



Horizon: Upper Triassic, Ipswich, Q. 



Genus Austroblattula, n.g. (Text-fig. 39). 



Small tegmina (less than 10 mm. long), with the humeral area, 

 if anything, slightly longer from base to apex than is the anal 

 area. Sc apparently fused with R basally, and consisting of a 

 single, straight vein bordering the humeral area distally. R 

 bent near base, then almost straight for most of its length, 

 curving slightly upwards towards the apex. Anal area some- 

 what cultriform, more than usually broad; the anal veins appa- 

 rently unforked (indistinctly preserved). 



Genotype, Aiistroblattula ijwviciensis, n.sp. (Upper Trias 

 of Ipswich, Q ). 



This genus comes fairly close to Mesoblattina Geinitz, from the 

 Lias of Dobbertin, Mecklenburg, but may be distinguished from 

 it by its larger humeral area, not crossed by any branch of Sc, 

 by its broader anal area, and by the absence of intercalated 

 veins. From Mesoblattula Handl., another genus of small cock- 

 roaches from the same beds, it can be at once separated by the 

 absence of the strong double-curving of R, as well as by its 

 larger humeral and anal areas, and by the absence of intercalated 

 veins. It agrees with IViassoblatta in lacking this strong 

 double-curving uf R, but differs from that genus in its much 

 larger humeral area (in comparison with its size), its strongly 

 reduced Sc, its much more strongly curved vena dividcus, and its 

 much smaller size. The differences between it and Samaroblatta, 

 apart from its size, are indicated in the generic key already 

 given. 



