BY R. J. TILLYARD. 



235 



and the inter-radial cross-vein respectively. R 3 and P» 6 both 

 forked, the posterior portion of K 5 (i.e., K 5b ) again forked distally. 

 R 4 connected with R 5a by a single cross- vein. Median cell nar- 

 row, elongated, six-sided, closed distally by the inter-median 

 cross-vein, and crossed internally by an extra cross-vein at its 

 basal third. Apical fork between M 1 and M 2 crossed by an extra 

 cross- vein; the same is true of the apical fork between M 3 and 

 M 4) but the cross-vein descends upon the upper branch of a small 

 fork made by the bifurcation of M 4 into two veins distally. CU] 

 forks at a level about half-way along the wing, the fork being 

 supported by a cross-vein from M 4 directly upon it. Apical fork 

 between Cu la and Cu lb crossed by an extra cross-vein, which is 

 continued above to M 4 . Single cross-veins, as usual, connect the 

 branches of Cu and the anal veins. (Third anal vein and jugal 

 lobe missing in the fossil, also a portion of the apical area of the 

 wing). 



Genotype, Belmonlia mitchelli, n.g. et sp. (Upper Coal- 

 Measures of Newcastle, N.S.W.). 



Text-fig. 1. 

 Belmontia mitchelli, n.g. et sp. , forewing ( x 6). Upper Permian of Bel- 

 mont, N.8.W. xy indicates the line along which the rock was broken 

 in two. For rest of lettering, see Text-fig.2, p. 238. 



Belmontia mitchelli, n.sp. (Plates xii.-xiii.; Text-tigs. 1-3). 

 This species is represented by a single forewing, as shown in 

 Plate xii. and Text-fig. 1. The extreme base is covered over by 

 a small piece of rock which, owing to its conchoidal fracture, 



