290 Transactions. 
Abdomen dark fuscous, including appendages of male, of which a pre- 
paration in 10 per cent. KOH solution is shown in text-fig. 4; they are 
remarkable for their elongate, narrow form. In the dried insect the two 
gonapophyses often appear closely contiguous, almost as if fused together 
in the middle line. In the female the last segments of the abdomen are . 
drawn out into a slender ovipositor about 2 mm. long, carrying at its 
extremity two minute ear-like appendages. 
es.—Holotype male (expanse 17:5 mm.) from Gouland Downs (7th 
February, 1922, К. J. T.); allotype female (expanse 15:5 mm.) from Nelson 
(29th December, 1920, A. Philpott); and series of males from Nelson, 
Mountain, Mount Arthur, and Gouland Downs: all in Cawthron 
Institute collection. The holotype male is selected for the boldness of 
its markings, and is shown in Plate 19, fig. 1. 
Habitat.—Fast-running streams throughout the Nelson district as far 
as Collingwood and Gouland Downs; also around Wellington, though 
apparently not so common ; and occasionally in Canterbury. This species 
.is readily attracted to light, and is a very rapid runner, dashing about 
wildly when captured. 
UD 
Genus NEUROCHOREMA n. g. (Text-figs. 5, 6.) 
A very distinct genus, differing from all the other New Zealand repre: 
sentatives of the family by the great dissimilarity in the venation of the 
wings in the two sexes, and also by the absence of the first apical fork, and 
C. 
1A Cu, Cus, 
ie. 
TExT-F1G. 5.—Neurochorema decussatum n. g. and sp. Venation of forewing 
of female (above) and male (below). (For lettering see p. 314.) Note = 
fusion of М» and M, basally in the male. In the male the dotted 
lines indicate enclosed hyaline areas. 
the incompleteness of R, basally, in the hindwing. Wings considerably 
broader in male than in female: in the latter, Sc, at about half-way у 
both wings, approaches very close to the costal border, and runs in contach — ' 
with it from there on to its termination. Pterostigma of forewing Very 
