LEPIDOPTERA HETEKOCERA. 619 



broad ; exterior border very slightly festooned. Fore wings 

 rectangular at the tips ; hind part of the exterior border very 

 oblique. 



The structure of the palpi distinguish this genus from Diph* 

 tera. 



Detunda atronivea. 



Mas. Alba ; caput nigro fasciatum ; palpi nigro bifasciati ; 

 thorax lateribus anticis tegularumque marginibus nigris ; 

 abdomen cinereum, apice album ; alee anticce plagis parvis 

 fuscis atro marginatis, maculis marginalibus nigris Ian- 

 ceolatis ; posticae cinerece, tinea angulata nigra, maculis 

 duabus margineque exteriore nigricantibus. 



Male. White. Head with a black band in front. Second joint of 

 the palpi black above, fringed beneath with black-tipped hairs ; third 

 black at the tip. Antennae black. Thorax black on each side in 

 front ; the four tegulae with black borders. Pectus black. Abdo- 

 men ciuereous; apical tuft 1 white. Tibiae striped with black; 

 tarsi black. Fore wings with irregular brown marks which are 

 bordered with deep black ; most of these form three very irregular 

 bands, of which the third is forked in front, exterior border with 

 black lanceolate spots. Hind wings cinereous, with a blackish 

 discal spot, with an indistinct blackish spot on the inner side of 

 the first spot, and with an exterior angular black line ; exterior bor- 

 der blackish. Length of the body 9 lines ; of the wings 22 lines. 



o. New Zealand. From Major Parry's collection. 



Genus GAURENA. 



Mas et fcem. Corpus robustum. Proboscis mediocris. Palpi 

 validi, oblique ascendentes, verticera non superantes ; articulus 2us 

 subtus pilosus ; 3us longi-conicus aut lanceolatus. Antennae validae, 

 glabrae. Abdomen alas posticus perpaullo superans. Pedes validi, 

 dense fimbriati ; tibiae postica? calcaribus quatuor elongatis. Alae an- 

 ticae latae, apice rectangulatee, raargiue exteriore convexo subobliquo. 



Male and female. Body stout. Proboscis moderately long. 

 Palpi stout, obliquely ascending, not rising higher than the vertex; 

 second joint pilose beneath; third elongate-conical, or lanceolate, 

 about one-third or nearly one-halfof the length of the second. An- 

 tennae stout, smooth. Abdomen extending very little beyond the 

 bind wings, slightly tufted along each side in the male. Ljgs stout ; 



