BY R. J. TILLYARD. 



727 



division between the two portions being faintly visible as an 

 oblique line running from the costa, just above tlie origin of Rs, 

 obliquely outwards and downwards to join the clavus close up 

 to its distal angle. Costa edged by a distinct coriaceous l)order, 

 which probably extended right round to lA, as in most recent 

 forms. Rs arising from R at about two-fifths of the wing-length, 

 and continuing the line of R directly distad; R^ arching strongly 

 up anteriorly, and then turning so as to run halfway between C 

 and Rs, parallel to both, and connected with l)oth by a number 

 of faintly indicated, slightly oblique cross-veins. M leaving R a 

 little before one-fourth of the wing-length, and, very soon after, 

 meeting Cu near its base, fusing with it for a very short distance. 



Ki Rs 



M+Ca 



Text-fig. 2. 

 «., Ptnno-<rnrffi mltchtUl, n.g. etsp., tegnien (length (i "4 mm. ). Xewcastle, 

 Permian. The division between the stronger basal and weaker 

 distal tubereulation of the wing-membrane is marked by the double 

 dotted line, but the tubereulation itself is omitted, /*., Tegmen of 

 Eo>*carta semirosen {W &\\i.) . Recent; Oriental Region. Tubereula- 

 tion omitted; d, claval area; co, c(jriaceous border. 



and then diverging from it in the usual manner, so as to run 

 longitudinally through the middle of the corium. Cu runs 

 nearly parallel with lA. K^, Rs, M, and Cu all fork widely in 

 the last quarter of the wing-length, the branches of the forks 

 uniting in the usual manner to form a series of four apical cells; 

 but the stem formed by the union of the lower branch from Rs 

 and the upper branch f lom M again forks widely as it approaches 

 the wing-border. The lower branch from Cu reaches the border 

 just beyond 1 A. 



Genotype: Fermoscarta mitchelli, n.sp. 



