294 Transactions. 
Thorax very dark brown. Legs—femora medium testaceous ; fore and 
hind tibiae dark brown, middle tibiae somewhat paler, very hairy; spurs 
testaceous ; tarsi rather dark brown annulated with paler brown. 
Wings.—Forewing a medium fuscous, covered with numerous raised 
hairs, some dark, some yellowish- brown; a strong fringe of blackish 
hairs along termen, longest at tornus; pterostigma 1-2 mm. long, strongly 
marked, dark fuscous; termen with row of pale golden-brown spots just 
indieated along margin, and similar row parallel to it from end of ptero- 
stigma to behind tornus; veins brown. Hindwin subhyaline, with 
rownish veins; membrane slightly infuscated apically ; fringe of delicate 
brownish hairs. 
. Abdomen blackish, tenth tergite and pre-anal appendages dark, gona- 
pophyses and penis semitransparent yellowish-brown. Sternites 8 and 9, 
with conspicuously projecting mid-ventral spines. Text-figs. 9 b, 10а, show 
a preparation of the appendages in 10 per cent. KOH solution, seen from 
Trxt-Fic. 9.—Dorsal views of male genital appendages in the genus H ydro- 
chorema n. g. а, i ] n. sp.; b, in Н. crassi- 
caudatum n. sp. The large forceps in each case is formed by the 
two gonapophyses. (x 40.) (10 per cent. KOH preparation.) 
above and laterally. In the dried specimen the very long, thickened 
forceps formed by the gonapophyses is the distinguishing mark of this 
species, and has suggested the specific name. 
Unknown 1 
. Types.—Holotype male, Nelson (15th December, 1921, А. Philpott) ; 
two other males, of larger size and more brownish coloration, expanding 
about 19-20 mm., one from Takaka (6th February, 1921, В. J. T.) and one 
from Rotorua, North Island (18th November, 1919, R. J. T.); this last gpecr 
men is rather rubbed and old, and has been used for the preparation 0 
the appendages drawn in text-figs. 96, 10a. All the above in Cawthron 
Institute collection. 
