BY R. J. TILLYARD. 31. '^ 



Head rich brown: rifex dark bi-owii: antenna' with basal 

 joint ricli brown, rest dark brown. Tliorax blackish: A'y.s- 

 testaceous. Abdinncn blackisli, with no clearly visible ap- 

 pendages in ^: end of abdomen in 9 ^^ith two closely appn^ssed 

 pi-ocesses, with Hattenefl, upturned ends. W i n .i;; s : forciv'imi 

 uniformly brown all over, with lai-i^e, reddish pterostigma. Most 

 of the cross-veins stronj^ly darkened. All the veins .shaded with 

 darker brown, except near base and apex. Hindwiiuj hyaline, 

 with Ion*,', reddish-brown pterosti,i;ina. 



Types, (J9, in Coll. Tillyard. .V long series taken in No- 

 vember, 1915, along the river-side at National Park, N.S.W.. by 

 sweeping wattle-trees and bushes overhanging the water. 



This species appears to be closely allied to ,S'. hrinrni'n P.anks, 

 from Queensland, but is clearly distinguished from it by the 

 much darker bodv-colouration and the i-eddish pterostigma. >'. 

 puDcfafn P>anks, also from Queensland, is distinguished by its 

 Itl'oader hindwings, and bv the elongated basal joint of the 

 antenna\ 



Family liEROTHTD^:. (Plates xvii.-xviii., fig.s. 28-33). 



Rather small, somewhat slenderly built in.sects; antenna* short 

 or uioderate in length; wings variable in shape. No unspecialised 

 cross-veins. Sc and P fused distally. A single Rs present in 

 forewing, with four to eight, subparallel, and i-egularly arranged 

 branches. No false origin to Rs in hind wing. M forked in 

 both wings. Cu forked in forewing, but no true Cuo present in 

 hindwing, where Cu,,,, however, comes oft' from Cu, not far from 

 posterior border of wing, and runs close to, and parallel with it. 

 Wings hairy, especially along the posterior border, which carries 

 a fringe of long hairs. Peculiar scales, of a seed-like form, de- 

 veloped from modified hairs, present on some part of the wing 

 (either on the posterior fringe, or on some of the main veins). 

 Females with long, caudate appendages. 



I propose to include in this family the two closely allied 

 Holarctic genera, Jlfivotha and hoacfliptproii, together with the 

 very remarkable, new Australian genus SpermophovfUa, described 

 below. These may be distinguished as follows: — 



