BY R. J. TILLYARD. 201 



joined to M near base. Anal veins distinct and quite separated 

 distally. 



(> e 11 o t y p e, Aristopsyche superba, n.sp. (Upper Triassie, 

 Ipswich, Q.). 



This genus would appear to be fairly closely allied to both 

 Mesopsyche and Tridssopsyche. The form of the radial cell 

 resembles that of the latter genus very closely, while the form of 

 the median cell, with its peculiarity of having the medio-cubital 

 cross-vein attached almost exactly to the origin of M 4 , resembles 

 that of the former genus. In the peculiar form of Cu 3 there is 

 also a close resemblance to Triassopsyche; in this latter genus, 

 only enough of the wing is preserved to show the more distal of 

 the two descending branch- veins, and the more distal part of 

 Cuj is somewhat zigzagged, through being braced by excess cross- 

 veins, not present in Aristopsyche. 



It is much to be regretted that, perfect as this fossil is (with 

 the exception of a single break across the anal veins), some cuts 

 made by the knife in exposing it have, most unfortunately, par- 

 tially destroyed the impression in the region where the cubital 

 fork should occur, so that it is not possible to determine with 

 certainty the true course of the veins Cuj and Cu 2 at their 

 origins. 



That the wing is truly a forewing there can be little doubt, not 

 only because the fourth apical fork is present, but also because of 

 the distinctness of the impression, the evident strength of the 

 veins, the well-formed costal area, and the general shape of the 

 wing. The difference between the formations of the anal veins 

 in this fossil and in the fore wings of all true Trichoptera is very 

 remarkable; and there seems to be no doubt that the anal areas 

 of the forewings of the other three genera from Ipswich must 

 closely resemble this also. For Truissopsyche is so close to 

 Aristopsyche that we are bound to conclude a close similarity in 

 the form of their anal veins, though these are not preserved in 

 the former genus. Moreover, in Neuropsyclie, n.g., which will 

 be seen to be equally close to Mesopsyche, some of the anal area 

 is preserved, and is found to be closely similar to that of Aristo- 

 psyche. 



