450 MESOZOIC INSECTS OF QUEENSLAND^ IX., 



tomically forked. The small bark-baunting Peiiamantinae, well represented in 

 Australia to-day, are perhaps the direct descendants of this family. 



Genus Thiassomantis, n.g. (Plate li., %. 27; Text-fig. 73.) 



Characters as given for the family, with the following additions: — Costal 

 and pterostigmatio veinlets, and all series of cross-veins, fairly abundant, oblique 

 and parallel to one another. Se and Ri both turn fairly shai'ply upwards to 

 end on the costal margin. R2+3 runs quite straight to a point a little above the 

 apex, and gives off a strong anterior distal branch (R2) below the end of Ri, 

 together with a set of shorter distal branchlets anteriorly at the end of Rs- 

 R4+5 also runs quite straight below and parallel to R2_|-3, and gives off R* as a 

 close parallel branch above R5; the latter continues the line of R44.5 and ends 

 up at the apex of the wing, which is well rounded. M slightly curved down- 

 wards near middle of wing; both its main branches give off somewhat irregular 

 posterior branches with small terminal forks. Part of Cui preserved distally 

 as a straight vein having a small terminal fork. 



Genotype, Triassomantis pygmaeus, n.sp. (Upper Triassie, Ipswich, Q.). 



Triassomantis pygmaeus, n.sp. (Plate li., fig. 27; Text-fig. 73.) 



This species is represented by a rather faint impression of a left forewing, 

 complete except for the loss of the clavus and most of the cubitus. Total length, 



Text-fig. I'd.— Triassomantis pygmaeus, n.g. et sp. Eestoration of forewin 



to right {^see Plate li., fig. 27.) (x Jl). 

 Text-fig. 74. — Triassolocusta lepioptera, n.g. et sp 



li., fig. 28.) (x5.4). 



with apex 

 I. Restoration of forewing {see Plate 



10 mm. Greatest breadth, 2.8 mm. The costal veinlets are numerous and more 

 closely spaced than the cross-veins in the rest of the wing. The elongated ptero- 

 stigma carries eleven veinlets spaced about the same distance apart as the cross- 



