BY n. J. tlLLYARt). 741 



terior margins almost parallel. Anal veins very distinct; the 

 rest obsolescent. Apparently R, M, and Cu arise from a com- 

 mon basal stalk, and diverge slightly distad. This wing might 

 be the tegmen of a Permofulgorid closely resembling No.3l 

 described above. 



Specbneit No.27 . — The poorly-preserved distal portion, 6*5 mm. 

 long, of a wing resembling No. 25. 



In both the above specimens, the posterior margin shows a 

 very definite coriaceous border about 0-2 mm wide, along its 

 entire length. I know of no Palaeozoic type that shows this 

 structure, which strongly suggests the suture of a Coleopterous 

 elytron. The hypothesis that these wings might represent the 

 first stages in the evolution of this latter type is a very tempting 

 one, but should not, I think, be entertained on the basis of such 

 poor material as we have in hand at present. 



Specimen No 28. — A portion of a wing, 10 mm. long, showing 

 indistinct subparallel veining. Not sujSiciently characterised to 

 classify. 



Specimen No. 29. — A small, broadly ovate fragment, 1-5 mm. 

 long by nearly 1 mm. broad, carrying nine longitudinal veins, 

 and distinctly convex. At first sight, this specimen is very 

 much like the elytron of a Beetle, Careful examination shows, 

 however, that the supposed margin is in reality only a broken 

 edge, with no sign of a suture. Probably a small portion of a 

 larger wing, and not sufiiciently characterised to classify. 



Specimen No. 20. — Cannot be referred to the Insecta with any 

 certainty. 



Specimen No.S2. — An impression of a small portion of a wing, 

 56 ram. long by 1*2 mm. wide, resembling, at first sight, the 

 wing of a small Tipulid or a Mosquito. The venation is only 

 visible in the short petiole, and along a very strong vein, pro- 

 bably the cubitus, which curves to the posterior border at about 

 two- thirds the length of the wing. In strong oblique light, a 

 row of large, widely- spaced cross- veins can be seen above this 

 vein. Thus the impression is probably only a small fragment of 

 a very large wing, and too incomplete to classify. 



All the specimens here mentioned, except No. 32, were found 

 at Belmont. 



