180 MESOZOIC INSECTS OF QUEENSLAND, i., 



That beii]g so, it becomes questionable wliether Handlirsch's 

 family ProhemerohiidcB ought to be retained, especially as the 

 name is misleading, and suggests that they were ancestors of the 

 Hemei'obiithp,, with whi(;h they almost certainly had nothing to 

 do. All these forms might well be classed as Psijchopsidce. 

 Protopsychopsis venosa, n.sp. (Plate viii., fig.3). 



Characters as for the genus. [Only the apical portion of the 

 wing preserved]. All the venation beautifully preserved, except 

 for the more basal portion above 8c, which is indistinct. The 

 furrows between the sectors are very clearly shown, but have 

 not been drawn in the plate, in order to keep the venational 

 scheme quite obvious. 



Measureynents of fragment : greatest length 9*5 mm., greatest 

 breadth 7 "3 mm. The complete wing would probably be 30mm. 

 long, and 15 mm. across at its greatest width. 



Type, Specimen No.lGOa. (Coll. Queensland Geol. Survey). 



Order TKICHOPTERA. 

 Family M E s o p s y c H i d ^, fam.nov. ( Plate vii.). 

 Characters of Forewing. — A long pterostigmatic region pre- 

 sent, not strongly chitinised, closed off proximally by a cross- 

 vein between Sc and R. Costal space with extra cross- 

 veins present. Rj joined to R^, near apex by means of a cross- 

 vein or ol:)lique posterior branch. All five apical forks present, 

 and at least one of them divided into two or more separate cells, 

 by cross-veins not 'present in recent forms. Apical fork 2 wiih 

 wing point present. Discoidal and median cells present, com- 

 pletely closed, separated by an extra closed (subdiscoidal) cell 

 between Rg and M^. Thyridium-cell present or absent. Cubital 

 veins variable. [Anal area not preserved]. 



With the above definition of the family, the two beautiful 

 forewings represented in the present collection may be jDlaced in 

 two separate genera as follows : — 

 Thyridium-cell absent; apical fork 2 divided into three p(jlj'gonal cells, 1)3' 



means of two cross-veins and zig-zagging of R4 and Rg 



Genus Mesopsyche, n.g. 



Thyridium-cell present; apical fork 8 divided into two cells 



Genus Triassopsyche, n. ii. 



