344 Mr. E. Meyrick on the classification 



curved ; second from three-fourths of costa to two-thirds of inner 

 margin, rectangularly bent in middle and curved inwards to 

 beneath discal spot ; discal spot transverse, raised, black ; a row of 

 blackish dots before hind margin, sometimes followed by a row of 

 grey- whitish submarginal lunules ; cilia dark grey, with a dark 

 fuscous basal line. Hind wings clear ochreous-yellow ; a well- 

 defined moderately broad dark fuscous hind-marginal band, rather 

 dilated towards inner angle, continued narrowly along costa ; cilia 

 grey, with a dark fuscous basal line. 



Sydney, New South Wales ; Port Lincoln, South 

 Australia ; in September, November, February, and 

 March, common but local. 



Nyctarcha, n. g. 

 Forehead flat, vertical. Ocelli present. Tongue well developed. 

 Antennte less than two-thirds of fore wings, iu male stout, fihform, 

 evenly ciliated (^ — |), above pubescent (atra) or rough-sealed 

 (opJiideres). Labial palpi moderate, straight, porrected, 2nd joint 

 with dense projecting scales beneath, longer towards apes, terminal 

 joint exposed, thick, somewhat expanded with scales towards apex 

 and obliquely truncate. Maxillary palpi long, not much shorter 

 than labial, expanded with scales towards apex, truncate. Posterior 

 tibiae with outer spurs half inner ; legs short. Abdomen rather 

 stout, in male with moderate anal tuft ; valves retracted, uncus 

 moderately long. Fore wings with vein 11 moderate, rather 

 oblique. Hind wings rather broader than fore wings ; 3, 4, 5 

 approximated at base, 7 out of 6 near origin, anastomosing with 8 

 to one-fifth to one-thu"d. Hind wings with lower median and 1 6 

 each strongly pectinated towards base. 



A peculiar and interesting genus, probably of an early 

 type. 



a. Hind wings dark fuscous . . . . . . . . atra. 



b. ,, ,, orange. 



1. Fore wings with a pale spot on costa . . . . ophideres. 



2. ,, ,, with six scattered pale spots .. 'persumptana. 



Nyctarcha persumptana, Walk. 



Orosana persumptana, Walk., Tort., 459. 



J , 16 mm. Head black, spotted with ochreous-orauge on fore- 

 head and crown. Labial palpi black, towards base j'ellow-ochreous ; 

 maxillary palpi black, apex pale ochreous. Antennae black. Thorax 

 black, with two anterior dots and a posterior spot ochreous-orange. 



