178 Transactions. — Zoology. 



34. Elach. thallopliora, n. sp. 



$ 9 . 8-15mm. Head ochreotis- whitish, with a central 

 longitudinal ochreous-brown stripe. Palpi white. Antennse 

 whitish-fuscous. Thorax brown, with an ochreous- white 

 stripe on each side of back. Abdomen grey, anal tuft ochreous- 

 whitish. Legs dark fuscous, posterior pair whitish. Fore- 

 wings lanceolate ; pearly white ; an ochreous-brown longi- 

 tudinal streak from base of costa, and another from base in 

 middle, converging to a point in disc at 4, where they terminate ; 

 an ochreous-brown streak along inner margin from base to 

 anal angle ; in male these markings are thicker, darker, and 

 more suffused, and posterior half of costa is also suffused with 

 brown : cilia in male whitish-fuscous, in female ochreous- 

 whitish, beneath anal angle fuscous-tinged. Hind wings grey ; 

 cilialight grey. 



Christchurch (on sandhills) and Mount Arthur (4,000ft.), 

 in January and March ; locally abundant. The variation in 

 size is noteworthy, some of the largest females being twice as 

 large as the males. The species is a remarkably distinct one, 

 but recalls E. rufocinerea, to which it has probably some real 

 relationship. 



§ B. Vein 4 of both wings absent. 

 35. Elach. helonoma, n. sp. 



(? 9 . 8-lOmm. Head and thorax ochreous-whitish,- 

 sprinkled with ochreous. Palpi white. Antennae fuscous. 

 Abdomen grey- whitish, anal tuft ochreous-wdaitish. Legs dark 

 fuscous, posterior pair ochreous-whitish. Forewings lance- 

 olate ; whitish, more or less irrorated with ochreous, especially 

 on dorsal half ; a slender ochreous-fuscous median longitudi- 

 nal streak from near base to middle, and a second from above 

 extremity of first to near apex ; a fuscous dot beneath apex of 

 first streak, sometimes obsolete ; inner margin more or less 

 obscurely browmish towards base : cilia grey- whitish. Hind- 

 wings pale grey ; cilia grey- whitish. 



Christchurch, on the Port Hills ; in January and March, 

 abundant amongst the tussock-grass, to which it appears 

 attached. 



36. Elach. exaula, n. sp. 



S . 9-lOnmi. Head and palpi ochreous-whitish. An- 

 tennae fuscous. Thorax whitish-ochreous iiTorated with gi'ey. 

 Abdomen grey, anal tuft whitish-ochreous. Legs dark grey, 

 ringed with whitish, posterior tibiee whitish. Forewings lance- 

 olate ; pale whitish-ochreous, irrorated with grey, more closely 

 and suffusedly on costa, more yellowish-tinged in disc ; a slen- 

 der black median streak from near base to before middle ; a 

 black elongate dot in disc above middle, and a second, larger 



