176 transactions. — /Zoology. 



with a scaled membranous ridge along lower median vein be- 

 neath ; grey-whitish ; cilia grey-whitish, at apex pale whitish- 

 yellowish, with a blackish -grey spot. 



Larva lG-legged, slender, attenuated towards both extremi- 

 ties, especially posteriorly ; whitish-brown or whitish-green ; a 

 straight slender dorsal line and two rather irregular ill-defined 

 lines on each side of it ochreous-brown or green, according to 

 ground colour ; Hbeneath these a rather broad yellowish-white 

 spiracular line ; space beneath 'this dull brown; spots minute, 

 black ; head grey-whitish or greenish-whitish, irregularly striped 

 longitudinally with dark fuscous. Feeds openly on Carmichcelia 

 australis (Leguminosce), gnawing the twigs (the plant being leaf- 

 less). Pupa in a rather thin firm spindle-shaped cocoon. 



Christ-church ; three larva? found in March, from which I 

 bred one specimen in April. 



21. Orth. prasinodes, n. sp. 



Male. — 14 mm. Head and antennae grey- whitish. Palpi 

 moderately long, grey- whitish, second joint, except apex, and 

 base of terminal joint dark fuscous, terminal joint somewhat 

 longer than second. Thorax light greenish-grey, suffusedly 

 mixed w T ith dark grey. Abdomen grey-whitish. Legs dark 

 fuscous, apex of joints and posterior tibiae grey-whitish. Fore- 

 wings elongate, costa sinuate, apex and hindmargin rounded ; 

 light dull greenish, disc, inner and hind margins much suffused 

 with dark grey, rest of wing indistinctly dotted with black, costa 

 more distinctly; a small pale spot in dark suffusion below middle 

 of fold; a small black spot in disc at § , preceded by a pale longi- 

 tudinal streak in disc : cilia grey, mixed with grey-whitish. 

 Hmdwings elongate-ovate, beneath with a long thin pecten of 

 hairs from vein lc directed towards disc ; pale whitish-grey ; 

 cilia grey-whitish, with a dark grey spot at apex. 



Christchurch ; one specimen in March, amongst bush. 



22. Orth.' porphyritis, u. sp. 



Male, female. — 11-14 mm. Head light ochreous. Palpi 

 long, light ochreous or whitish, externally suffused with dark 

 fuscous, terminal joint twice as long as second. Antenna? 

 whitish, annulated with dark fuscous. Thorax ochreous, mixed 

 and suffused with purplish and dark fuscous. Abdomen grey. 

 Legs dark fuscous, apex of joints and posterior tibiae whitish. 

 Forewings elongate, narrow, costa arched, apex acute, hind- 

 margin very obliquely sinuate ; brownish-ochreous, with purple 

 or coppery reflections, sometimes mixed with grey-whitish ; an 

 irregular irroration of small dark fuscous spots ; markings 

 suffused, deep bronzy or violet-fuscous, very variable ; normally 

 a fascia-like rather oblique streak from costa at |-, usually 

 abbreviated, but sometimes reaching inner margin, an irregular 



