180 THE PROCEEDINGS OF THE LINHEAN SOCIETY 



from the fourth branch near its base rises an irregular black 

 streak running a little below the main median vein, meeting its 

 extremity on hindmargin, margined beneath by a broad silvery- 

 white streak, interrupted where it crosses the second and third 

 branches ; the basal part of the median vein and half the fifth 

 branch is margined beneath by a narrower silvery-white streak 

 ending in some black scales ; between the second and fourth 

 branches are several irregular spots of black scales ; a blackish 

 line from near base to anal angle ; a blackish spot almost on 

 inner margin near base, sending a cloudy blackish streak towards 

 hindmargin ; a blackish line along posterior half of inner margin ; 

 a row of irregular blackish spots before hindmargin between the 

 veins ; cilia whitish, partially tinged with pale pinkish-brown ; 

 with a dark fuscous spot at apex, and intersected at the junction 

 of each vein by a blackish line. Hindwings fuscous-grey, darker 

 towards apex and hindmargin ; cilia white. 



This singular insect (erroneously referred by Walker to Cram- 

 bus) is rather common near Sydney and at Campbelltown, and 

 occurs also in the neighbourhood of Brisbane, in April, Sep- 

 tember, and December ; always beaten from Casuarina, on which 

 the larva doubtless feeds. 



CEAMBUS F. 



Ocelli distinct. Tongue longer than thorax. Antennas seta- 

 ceous, in generally slightly ciliated or sometimes pectinated, in 

 $ simple. Labial palpi long, attenuated, compressed. Maxil- 

 lary palpi triangular, incumbent. Forewings oblong, acute ; 

 hindwings with basal pecten, not reaching beyond anal angle of 

 fore wings. 



The species of this cosmopolitan grass-feeding genus are 

 tolerably numerous in Australia ; those here described, all that I 

 have yet seen, may be thus tabulated : 



A. Apex of forewings strongly produced ... ... 1. milvellus. 



B. ,, not strongly produced 



a. Forewings with two discal longitudinal silvery- 

 white streaks. 



I. Upper streak starting from middle of wing 5. aurantiacut. 

 [6J 



