610 ‚ Transactions. 
New Zealand Hydroptilidae (Order Trichoptera Ji 
By Martin E. Мозкгх, F.E.S. 
Communicated by R. J. Tillyard, M.A., D.Sc. 
[Read before the Nelson Institute, 19th December, 1923 : received by Editor, 31st December, 
1923 ; issued separately, 28th August, 1924.] 
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New Zeatanp Hydroptilidae have attracted little attention, and only one 
species, Ozyethira albiceps McL., has been described. Even for this species 
the description is incomplete, as no drawings of the genitalia have hitherto 
been published. 
in other respects, and furnish material for a new genus, described as 
follows :— 
PAROXYETHIRA n. g. 
Spurs 0, 3, 4. Ocelli present. Head furnished posteriorly with two 
large. lobes or caps. with 32 1 joints, according to: 
species. Palpi as in 
In both anterior and posterior wings the. sector (according to MacLachlan's. 
nomenclature) is forked twice and upper branch of eubitus once, as shown 
iti fig. 1. 5." ' 
. Abdomen of $ having terminal dorsal segment excised with a wide | 
deep U-shaped excision extending nearly to base of segment, exposing the | 
according to species, and - 
Sixth ventral segment armed with a tooth 
Paroxyethira tillyardi n. sp. (Figs. 2, 3, 4, 5.) 
Length of anterior wing, $, 3-5 mm. 
jointe do 
superior appendages very short, armed at extremities each with a short’ 
| finger-like tooth, directed inwards. ue 
in balsam preparation, a series of stron y chitinized hooks, most of which: 
are grouped on right side of cavity with blackened apices directed towards: 
