208 Transactions. 
Locality.—Common in many parts of New Zealand: Rotorua, Tara- 
 wera, Taupo; also Cass and Kingston (R. J. Т). Probably generally 
distributed. 
Zelandobius unicolor n. sp. (Fig. 8.) 
so definitely moniliform, pale-brownish at base, darkening towards apex. 
Forewing subhyaline, tinged with pale-brownish, and along the costa with 
Fie. 8.—Forewing of Zelandobius unicolor n. sp. 
а suspicion of rose-pink; the veins yellowish-bro:sn. Hindwing hyaline 
with the faintest tinge of yellowish-brown. The intercubital series of cross- 
veins in the forewing does not go beyond the end of Cu,, and there are 
very few distal cross-veins, only two (rarely three) between each pair of 
main veins, as shown in fig. 9; those between Rs and Ms te; Mis. ЭП 
M,., Mj., and Cu, respectively are very faintly shaded with pale 
fuscous. Cerci excessively short. 
Type.—Holotype, apparently a male (abdomen shrivelled), in Cawthron 
Institute collection. 
Locality.—Arthur’s Pass, 18th January, 1920 (В. J. ede 
Genus NESOPERLA n. g. (Figs. 9, 10, 12.) 
Insects of medium size, somewhat larger than those comprised in 
Zelandobius Till. Radial sector simple in both wings. Costal space with 
no extra veinlets beyond the humeral. Pterostigma without any veinlets. 
In the forewing the series of cross-veins below Cu, is incomplete distally. 
Hindwing with the fusion between M, , , and Cu, complete. 
Genotype.— Leptoperla fulvescens Hare. 
This genus differs from Zelandobius Till. in having Rs simple in both 
wings, in having the fusion between M,,, and Cu, complete in the 
hindwing, and in not possessing any extra veinlets in the costal space. It 
differs from Zelandoperla n. g., to which it is very closely allied, by not 
having any pterostigmatic veinlets, and by the distal series of cross-veins 
in the forewing below Cu, being absent from the distal part of the area in 
question. 
