38 Transactions. —Zoology. 
spot on costa at 4, giving rise to a curved cloudy blackish-grey transverse 
line to anal angle; all these grey markings are sometimes partially suffused 
and confluent; a cloudy dark grey apical spot: cilia white, irregularly 
mixed with dark grey, forming a cloudy spot at apex and anal angle. Hind- 
wings pale grey; cilia grey-whitish. 
Separable from (E. epimylia by the larger size, ochreous-white head, and 
white ground-colour of forewings ; from (E. hemimochla by the distinct grey 
costal spots and transverse fascie, and always well-defined oblique streak 
beneath fold. 
Christchurch, Dunedin, Lake Wakatipu, and Invercargill, in December 
and January ; rather common. 
41. Œc. hemimochla, n. sp. 
Minor, alis ant. albidis, griseo-conspersis, striga sub plica posita obliqua, 
punctis disci duobus, striga anguli analis obliqua, maculaque subapicali 
nigricantibus ; post. albido-griseis ; capite ochreo-albo. 
Male, female.—143-16 mm. Head ochreous-whitish. Palpi ochreous- 
whitish, basal 3 of second joint, and base and apex of terminal joint 
suffused with dark fuscous. Antenne grey. Thorax ochreous-whitish, 
more or less mixed with grey. Abdomen ochreous-whitish. Anterior and 
middle legs dark fuscous, central ring of middle tibise, and apex of all joints 
ochreous-whitish ; posterior legs ochreous-whitish. Forewings moderate, 
costa moderately arched, apex rounded, hindmargin very obliquely rounded ; 
white, irregularly suffused with whitish-ochreous, and sprinkled with grey 
and a few blackish scales; costal edge dark fuscous at base; an oblique 
dark fuscous streak from fold before middle to near inner margin before 4, 
generally distinct on fold only ; a blackish dot in dise before middle, and a 
larger. one beyond middle, sometimes connected with apex of oblique streak 
by a cloudy dark fuscous line; a cloudy dark fuscous bar extending from 
anal angle almost or quite to second discal dot; a cloudy dark fuscous 
apical spot, suffusedly produced along hindmargin ; sometimes a curved 
transverse cloudy dark fuscous line near hindmargin, indented inwards 
beneath costa, often obsolete: cilia whitish, with rows of dark fuscous 
points, forming a cloudy spot at apex and anal angle. Hindwings whitish- 
grey or light grey ; cilia grey-whitish. 
Closely allied to Œ. contextella, and best separated by the absence of the 
distinct lighter and darker spots of the costa; also somewhat larger and 
duller, less variegated, without entire fascise, the oblique streak beneath the 
fold not generally distinct, and the hindwings lighter. 
Hamilton, Wellington, and Napier, in January and March ; rather 
common. Probably this species may be confined to the North Island, and 
CE. conteatella to the South. 
