Merrick. — On New Zealand Geometrina. 75 



29. Cid. rixata, Feld. 

 (Gidaria rixata, Feld., cxxxii., 1 ; Coremia squalida, Butl., Cist. Ent., ii., 505.) 

 Male, female.— 24-32 mm. Forewings moderate, hindmargin sinuate, 

 crenulate ; rather dark ashy-grey, somewhat mixed partially with light 

 olive-green ; numerous irregular dentate dark fuscous striae, except on a 

 median space, containing a black discal dot ; basal third somewhat mixed 

 with whitish, with two cloudy angulated whitish striae at i, partially suf- 

 fused with greenish, and two others less angulated rather nearer base ; 

 beyond the posterior pair the dark striae coalesce on lower half to form a 

 blackish fascia ; a double whitish line considerably beyond middle, dentate 

 anteriorly, sinuate near costa, obtusely bent outwards in middle, emitting 

 a long sharp tooth inwards below middle ; beyond these a third parallel 

 less distinct whitish or greenish line ; a very sharply dentate whitish sub- 

 terminal line, closely approaching this on lower half, anteriorly suffusedly 

 blackish-margined ; an oblique suffused blackish subapical spot. Hind- 

 wings moderate, hindmargin rounded, crenulate ; in male whitish-ochre- 

 ous, becoming greyish towards base, in female light grey ; a grey discal 

 dot ; an obscure angulated median band somewhat darker, or represented 

 by several incomplete striae ; an obscure grey dentate subterminal line. 



Constant ; immediately recognizable from all other species of the 

 family in New Zealand by the very fine acute indentation of the posterior 

 margin of the median band below middle. 



Wellington, Mount Hutt, and Otira Gorge (1,600 feet), common amongst 

 bush in January ; twenty-four specimens. 



30. Cid. purpurifera, Fereday. 

 (Cidaria purpurifera, Fereday, N.Z. Journ. Sc, 1883, .) 

 Male, female. — 28-31 mm. Forewings moderate, hindmargin faintly 

 sinuate, crenulate ; dull rather light olive-green ; two obscure irregular 

 dentate blackish striae near base, second followed by whitish scales ; two 

 irregular siuuate dentate blackish striae at \, curved outwards above middle, 

 suffusedly confluent on lower half, first slightly whitish-margined anteriorly ; 

 two other very irregular dentate blackish striae beyond middle, forming a 

 broad subquadrate projection in middle third, which is wholly suffused with 

 dark fuscous, second posteriorly white-margined, more broadly towards 

 costa ; between these two pairs of striae the included median band is dull 

 greyish-purple; a dentate white subterminal line ; an oblique blackish sub- 

 apical spot, white-margined above. Hindwings moderate, hindmargin 

 rounded, crenulate ; light brownish-ochreous. 

 Constant ; a very elegant species. 



Mount Hutt, in wooded gullies, common in December and January (Mr. 

 E. W. Fereday) ; sixty specimens. 



