874 MESOZOTC INSECTS OF QUEENSLAND, vii., 



The whole of the basal half or more of the tegmen is excel- 

 lently preserved, including the whole of the clavus except the 

 extreme apex. The peculiarities of the branchings of R and M 

 are well shown in Text-fig. 7. As far as preserved, Cuj is a 

 very straight vein, diverging slightly from Cu 2 . The peculiar 

 waviness of 1 A is very evident ; and this vein, as in Mesoscytina, 

 stands very far apart from 2A, which is a short vein, very 

 slightly waved. The anal angle of the clavus is broadly round- 

 ed, much as in Mesoscytina. 



The tegmen appears to be of a leathery nature, but not so 

 tough as those of the genus Mesoscytina; the indications of pit- 

 ting are also fainter. 



Type, Specimen No. 213 a-b. (Coll. Queensland Geol. Sur- 

 vey ) . 



Horizon: Upper Triassic, Ipswich, Q . 



Text-fig. 7 represents the larger piece of the preserved fosr.il, 

 which is the mould, since the vena dividens stands on a high 

 ridge. Alongside it, in the same box, there is a broken piece 

 of the cast, not so perfect; a study of this does not yield any 

 additional information about the venation of this fossil. 



Genus Triassoscarta, n.g. (Text-fig. 8). 



R unbranehed, but connected with the costal margin by a long- 

 series of transverse veinlets, extending from near base to near 

 apex. M and Cu arising together by a very short stalk. On 

 the clavus, vein 2A ends up about as far from the end of 1A as 

 the latter is from the apex of the clavus. (Course of M, beyond 

 half-way, obliterated) . 



Genotype, Triassoscarta subcostalis, n.sp . (Upper Trias- 

 sic, Ipswich, Q . ) 



Clearly allied to Permoscarta, from the Upper Permian of 

 Newcastle, N.S.YV., but differing from it in the simpler structure 

 of R, as explained in the key to the genera. 



Triassoscarta subcostalis, n.sp. (Text-fig. 8). 



Total length, 8 mm. Greatest breadth, 3.8 mm. 



The number of veinlets connecting R with the costal margin is 

 eight, arranged at approximately equal intervals; the second, 

 third and fourth of these are more obliquely placed than the 

 others. The middle distal portion of the tegmen has the vena- 

 tion obliterated; but there are slight indications that M was 



