TILLYARD.—Stone-flies of New Zealand. 213 
ents. Ventral plate entire, very slightly convex. Cerci 4mm. long, 
Ето. 13.—Wing-venation and colour-pattern of wings of Zelandoperla decorata n. g. et 
. (For lettering see fig. 1. 
Fic. 14.—a-c, heads and pronota of species of the genus Zelandoperla n. g. (X 16). 
a, Z. ala n. sp, 2; b, Z. fenestrala n. sp., ?; c, ventral plate of 
Z. fenestrata n. sp., $ (X 16); d, Z. maculata (Hare), 4. 
Wings pale greyish-subhyaline. Forewing richly marked with dark 
fuscous as follows: the whole of the basal fourth, except a clear patch 
below Am and another between 2A and ЗА, and the whole of the costal and 
subcostal spaces to the end of Sc.  Medio-cubital and intercubital cross- 
veins outlined with dark fuscous; the whole of the pterostigmatic and 
distal series enclosed in large fuscous patches, which in the case of the 
distal series are circular or nearly so in outline. Hindwing marked with 
