J. TILLYARD. 



287 



This is the first specimen of an insect wing found at Belmont stained an 

 oehreous colour, and thus standing out clearly from the grey rock on which it 

 is impressed. 



Order MECOPTERA. 



Family PERMOCHORISTIDAE. 



Permochorista sixuata, n.sp. (Plate xxsiv., figs. 5, 6; Text-fig. 4.) 



Two specimens of forewings referable to this species ai-e present in the 

 Collection. Specimen No. 55 (Plate xsxiv., fig. 5) is a very clear impression, 

 being both the obverse and reverse of a right forewing, the obverse with R and 

 Cui standing up as high ridge-veins, and the apex being to the right. The wing 

 is perfect except for the loss of most of the clavus or anal area. Total length 



^A Cu, cu, M,» " 



Text-fig. 4. Permochorista sinnata, n.s^. (x 13.3). Dotted veins restored from 



the paratype, all the rest representing the hole type. 

 Text-fig. 5. Permochorista affinis, n.sp. (x 13.3). 

 For lettering, see p. 260. 



8 mm.; greatest breadth 3 mm. Specimen No. 51 (Plate xxxiv., fig. 6) is a 

 slightly larger wing, obverse only, also on a medium grey cherty shale, but not 

 so clearly impressed as No. 55. Total length 8.3 mm. It is not quite perfect, 

 the extreme base being broken off, a considerable piece removed from the 



