Myers.—New Zealand Plant-hoppers. 325 
There is a very dark form at Arthur’s Pass (subalpime to ric de in 
which the veins and stigma are almost entirely black. I can detec 
differences in structure. This form was reared from nymphs beneath eae: 
Oliarus atkinsoni n. sp. (Plate 24, figs. 1, 2.) 
d. Length, 5mm.; tegmen, 63mm. Close to the preceding species, 
but differing in its very much greater size and in the following particulars : 
Whole body dusted with pruinose material so that to the naked eye it 
appears greyish. Tegmina colourless but clouded with whitish. Macro- 
trichia inconspicuous. Stigma white proximally, black distally. Genitalia 
ering as shown in the illustration (Plate 24, figs. 1, 2). The stem of the 
genitalia-styles is more deeply notched and the blade Py ud in proportion. 
©. Length, 5-8mm.; tegmen, 7-5 mm. mass о ent, fibrous, 
waxy material often as large as abdomen, projecting a insidere Li way 
behind anal D" and ovipositor, which latter resembles that of the 
preceding s 
Described 1 Ee fourteen males and twenty-six females. Waikanae (E. H. 
Atkinson); Wellington (J. G. Myers). In considerable numbers on the 
oppositus in its preference for ground herbage as distinct from bushes, and 
is found only in flax-swamps, apparently attached to the flax itself, where 
it may be found sitting singly or in copula on the shaded side of the leaf. 
It is with much pleasure that I dedicate this species to the discoverer 
Mr. E. H. Atkinson. 
Genus 7. TiRITEANA nov. 
Type: T. clarkei n. sp. 
Tegmina comparatively narrow, parallel-sided, тошо at apex. Margins 
with distinct border all round, widening out at stigma. Sc and R joined to 
about eg length of tegmen ; their bases joined to M for only a very 2 
distance from base. Forking of Cu just basad of separation of Sc an 
Claval vein joining margin before apex, forking rather distad of half ра 
of clavus. 
Longitudinal carina + vertex very short, not forked; median frontal 
carina nor forked. -maT of vertex very broadly an 
emarginate. Second joint of antennae nearly twice as long as thick. Base 
of face about half width of apex. Pronotum very short, with median 
longitudinal keel. Mesonotum long and narrow, tricarinate, somewhat 
flattened between carinae; hind-margin forming acute angle. Posterior 
tibiae unarmed. Ovi vipositor rather short and stout. Flocculent waxy 
material secreted caudally. 
Tiriteana clarkei n. sp. (Plate 24, fig. 3.) 
9. Length, 3-:8mm.; tegmen, 49mm. Dark ЯЯ brown; vertex 
and pronotum paler. Frons widest a& about two-thirds from base, where 
the sides are strongly elevated; shining dark-brown. Clypeus whitish. 
Under-surface and legs whitish, except abdomen, claws, and distal coronets 
of tibiae, which are all dark. Antennae long and d dead-black. Eyes dark. 
Pronotum posteriorly broadly angularly emarginate. Mesonotal carinae 
narrow but very distinct. Tegmina hyaline suffused intermittently with 
