BY R. J. TILLYARD. 



19 



TrIASSOLESTES EPIOPHLEBIOIDES, n.sp. (Textfigs. 1 1, \2b). 



A well-preserved fragment, 18-5 mm. long, greatest width (dis- 

 tally) 8-5 mm.; consisting of the greater portion of the basal half 

 of the wing, but without the extreme base. The anterior part, 

 including the costa, subcosta, and ladius, missing. The presei-^ed 

 portion includes the quadrilateral, the media and cubitus with 

 their branches, and the posterior border of the wing. The anal 

 vein appears to be completely fused \\ ith the latter. 



Text-fig. 11. 

 Trias.'^olesfes epioph/ebio'ide-'^, n.g. et sp., (Triassie, Ipswich, Q.). preserved 

 portion of wing; ( x 5). Cui, Cui, branches of cubitus; M,.o. upper, 

 and M4, lower sector of arculus; Ms, Z3'gopterid sector: p, petiole; 

 q, quadrilateral. 



The appearance of the fossil may be seen from Text-fig. 11. The 

 veins are all beautifully preserved, but unfortunately the wing 

 lies upon some plant-remains, which appear to have been hard 

 twigs or stems, and which have caused the fossil to rest upon a 

 very uneven surface; with the result that, in one place at least, 

 the wing has become crumpled or torn transversely, so that the 

 continuity of the main veins is badly broken. The veins can, 

 however, be followed across the break, and picked up on the 

 other side of it. Distally also, in the region of M1.2, the wing 

 lies upon an uneven surface, and the position of both main veins 

 and cross- veins is somewhat distorted. 



Eliminating the effect of these inequalities, it is not a ditlicult 



