32 Transactions. — Zoology. 



Forewings moderate, considerably dilated posteriorly, costa gently arched, 

 in male more strongly, apex acute, hindmargin sinuate, oblique ; whitish- 

 ochreous, irregularly irrorated with fuscous, sometimes wholly suffused 

 with ochreous-fuscous ; costal edge suffusedly dark fuscous ; a straight 

 narrow somewhat irregular dark fuscous fascia from % of costa to ^ of inner 

 margin, dilated on margins ; a round dark fuscous dot towards costa in 

 middle, and another (sometimes two longitudinally placed) above fold in 

 middle ; a short linear dark fuscous transverse mark in disc beyond middle; 

 a narrow dark fuscous fascia from f of costa to f of inner margin, rather 

 acutely angulated outwards above middle, dilated on costa : cilia dark fus- 

 cous. Hindwings in male rather light grey, with a darker central lunule, 

 cilia whitish-grey ; in female whitish, posteriorly slightly ochreous-tinged, 

 cilia ochreous- whitish. 



This species and the preceding form the transition in the shape of the 

 forewings from the rounded to the subfalcate apex. It varies considerably 

 in depth of colour, but the characteristic fasciae can generally be made out. 



Christchurch and Akaroa, from January to March ; not uncommon 

 amongst bush. 



33. Gymn. hyetodes, n. sp. 



Media, alis ant. M. fuscis, F. ochreo-flavis, punctis disci tribus obscuris 

 fasciaque postica recta nebulosa saturatioribus ; post. M. saturate griseis, 

 F. ochreo-flavis. 



Male. — 20 mm. Head and thorax greyish-fuscous. Palpi whitish, 

 anterior edge marked by a sharp black line throughout, second joint also 

 with a black stripe on each side. Antennae dark fuscous. Abdomen fus- 

 cous-grey. Legs dark fuscous, apex of tarsal joints whitish, posterior 

 tibiae grey. Forewings moderate, considerably dilated posteriorly, costa 

 moderately arched, apex acute, hindmargin sinuate, rather strongly oblique ; 

 light fuscous, paler posteriorly, irrorated with darker ; an indistinct darker 

 dot in disc before middle, and a second rather obliquely beyond it on fold ; 

 a cloudy dark fuscous transverse fascia from f of costa to f of inner margin, 

 obsolete on margins, posterior edge tolerably well-defined, slightly concave, 

 anterior edge suffused, containing an obscure darker dot in disc : cilia with 

 basal half dark fuscous, apical half whitish-ochreous. Hindwings dark 

 fuscous ; cilia dark fuscous, tips paler. 



Female. — 26 mm. Similar to male, but head, thorax, abdomen, poste- 

 rior tibiae, forewings, and hindwings with fuscous colour wholly changed to 

 golden-ochreous. 



I have little hesitation in uniting these sexes ; although at first sight 

 very dissimilar, the difference is of ground-colour only, and I suspect that 

 the yellow tints of the female are protective, approaching those of a decaying 



