TILLYARD.—Stone-flies of New Zealand. 205 
hook projects upwards between them but is considerably shorter. Cerci 
3 mm. long, with numerous small ring-like segments, yellowish-brown with 
abundant short hairs. 
ings: Specific characters in the wing-venation are the presence of a 
complete series of costal veinlets in the forewing, and the very regular and 
ins i associated with 
g. L 
Fic. 4.—Head and pronotum of Megaleptoperla grandis (Hudson), ¢ (X 44) 
Type in Mr. G. V. Hudson's collection ; sex not specified. 
Locality.—The type specimen was taken near Ohakune. Other localities 
for it are Tokaanu, Lake Taupo, where the larva is not uncommon under 
rocks in the Tongariro River (R. J. T.); Arthurs Pass and Dunedin 
(W. G. Howes). 
Genus ZELANDOBIUS Tillyard. (Figs. 5, 8.) 
un 
costal veinlets besides the humeral; pterostigma without veinlets; fork 
of Rs very short, terminal, usually without cross-veins, but sometimes 
with a single one as shown in fig. 6, forewing. Distal cross-veins irregularly 
enotype.—Le la confusa Hare. 
Several species of this genus occur in New Zealand. Нате has described 
two species, both under Leptoperla—viz., Z. confusus (Hare), and Z. hud- 
soni (Hare). 
