184 



MES(»ZOIC INSECTS OF QUKKNSLAND, i., 



wings known to have existed outside the Fhryc/arieidcf^ and 

 LiinnephilidcK. The provisional restoration of the missint; anal 

 area is drawn on the same lines as that for Mesopsyche. 



1A+Cu2 ')u^^ 



Text-fig. 8. 

 Restoi^ation of forewing of Trkissopsyche dnnatavi, n.g, et sp., { 

 For lettering, see Explanation of Plates. 



oS). 



Triassopsyche dunstani, n.sp. (Text-fig. 3, and Plate vii., fig.2). 



Forewing elongated, moderately broad, both anterior and pos 

 terior borders well curved distall3^ Apex moderately pointed. 

 Af.2 ai, apex of wing, Af.l placed well before it. 



Greatest length of fragment, 13-5 mm.; greatest breadtii, (:>-i^ 

 mm. Total length of restored wing, about 19 mm. Probable 

 expanse of wing in the original insect, 405 mm. 



Type, Specimen No. 128a. (Coll. Queensland Geol. Survey). 



These two fossil wings, Mesopsyche and Triassoj)syche, are of 

 very great interest, not only because they are the oldest fossil 

 Trichoptera yet discovered, but also because they are, in actual 

 wing-venational structure, very much more archaic than anything 

 yet discovered in this Order. The Liassic Necrotauliidce, de- 

 scribed from the beds of Dobbertin (Mecklenburg) and Aust 

 (England), are a series of very small wings, ranging from 3 mm. 

 to 7 mm. in length, the forewings possessing either four or five 

 apical forks, the hind wings four. Most of these wings have no 

 cross-veins, and, consequently, no closed cells of any kind. One 



