200 



MRSOZOIC INSECTS OF QUEENSLAND, V., 



The archaic condition of the anal veins, and the unforked 

 (Juj, connect the new Order with the Mecoptera. It seems 

 likely also that the ParatriehopteraT were closely allied to the 

 Diptera, which also have an unforked Cu,, though the anal veins 

 have undergone a reduction due to narrowing of the hase of the 

 wing. 



The four genera of Paratrichoptera now known from Ipswich 

 may be provisionally included within a single family, Mesopsy- 

 chid(e,, the characters of which were defined in No. 1 of this Series 

 '3, p. 180). The following key will distinguish them : — 



(i) 



C2) 



A short costal vein present, separate from the costal margin; 



all four apical forks free of cross-veins Akistopsyche, n.g. 



No separate costal vein (or basal part of costa not preserved); 



at least one apical fork with definite cross-veins 2. 



Sc and R very close together; pterostigmatic region very 



long and narrow 3. 



Sc and R further apart; pterostigmatic region not so narrow, 

 less regularly shaped; third apical fork with a cross-vein.. 



Triassoi»sv( he Tillyard. 



or three costal veinlets present; second apical fork 



ded into three cells by cross-veins Mesopsyche Tillyard. 



Numerous costal veinlets present; first apical fork with two 



eins; second apical fork undivided Neuropsyche, n.g. 



f Only two 

 subdivic 



I Numeron 

 I cross-v 



Genus Aristopsyche, n.g. (Text-fig. 25). 



Characters of /brewing : — Large wing with broadly rounded 

 apex and very regular scheme of venation; no excess cross-veins 

 in distal part of wing. A short but distinct costal vein present, 

 ending on costal margin at about one-fifth of the total wing- 

 length; veinlets are present both between this vein and the 

 costal border, and also between Sc and the same border. Sc and 

 R both straight, fairly close together ; pterostigmatic region 

 moderately long and narrow, with one veinlet. Both the radial 

 (discoidal) and median cells closed, with all four apical forks 

 sessile upon them, though the third fork is only just so. Cuj a 

 very strong, convex vein slightly bent downwards distally; not 

 forked, but giving ott' two very strong, oblique, posterior branches 

 to join the vein below, which is probably Cu 2 . Cuj distinctly 



