206 Transactions. — Zooloijy. 



1. PoRiNA, Walk. 



Antennae ^-f , in ^ bipectinated, or more or less shortly 

 bidentate. Palpi moderate, porrected, basal joint rough-haired, 

 second joint rough-haired or almost smooth, terminal joint 

 smooth, sometimes subclavate. Posterior tibiae densely rough- 

 haired. Forewings with vein 7 from angle of cell, 8 and IJ 

 out of 10, rising from upper margin much before angle. 

 Hindwings as in forewings. 



The difference in the structure of the antennae does not 

 here justify generic division : every gradation is found in the 

 Australian species between strong pectination and almost 

 imperceptible dentation, and no line can be drawn. In all the 

 species the forewings are elongate-triangular, with costa some- 

 what sinuate, apex rounded-obtuse, hindmargin very oblique! > 

 rounded, continuous with inner margin ; the hindwings formed 

 as the forewings, but less elongate. The species are trouble- 

 some to distinguish, owing to their great variability of marking 

 and colour, and some are imperfectly known to me. The fol- 

 lowing tabulation may therefore be found not entirely ac- 

 curate : — 



1. Forewings with a conspicuous pale streak 



above inner margin . . . . . . S. cinjsii. 



Forewings without a conspicuous pale streak 



above inner margin . . . . . . 2. 



2. Forewings with oblique, diverging, blackish 



discal bars . . . . . . . • • -• "'«''«■ 



Forewings without oblique, diverging, 



blackish discal bars . . ... . . 3. 



3. Forewings with conspicuous blackish spot 



above middle of inner margin . . . . i. characterifcra. 



Forewings without conspicuous blackish 



spot above middle of inner margin . . -1. 



4. Antenn;e of i stronglj' pectinated . . 1. dinodes. 

 Antennie of g bidentate . . . . 5. 



5. Cilia of hindwings ochreous, unicolorous 6. 

 Cilia of hindwings dark fuscous or barred 



with dark fuscous . . . . . • 'i- 



C. Central white streak of forewings almost 



straight .. .. .. ..7. lutibmculata. 



Central white streak of forewings irregular 



or broken into uneven spots .. .. S. signata. 



7. Discal white spots of forewings simple . . 6. dcspecta. 

 Discal white spots of forewings composed of 



about three confluent spots .. .. 5. cervtnata. 



1. Po7\ dinodes, n. sp. 

 ^. 59nuii. Head whitish-ochreous, face and palpi fuscous. 

 Antennae ferruginous, strongly bipectinated. Thorax fuscous, 

 with small whitish central spot. Abdomen and legs greyish- 

 ochreous. Forewings fuscous, somewhat ochreous-tinged ; 

 numerous irregular well-defined crescentic white marks ; on 

 dorsal half these are placed to nuirgin four transverse series of 



