Heteroc era from the Australian Region. 429 



somewhat elongated, angnlated in front; a lonp;iti;dinal black 

 streak almost uniting the two lines below the cell ; fringes of all 

 the wings plumbageous-grey, with a whitish basal and a black 

 subbasal line ; head and front of collar pale ochreous ; back of 

 collar pale sericeous-grey ; a large black spot on each tegula ; 

 abdomen pearly white ; wings below as above ; body pearl-white, 

 front legs greyish. Expanse of wings, 25 mm. 



Rockhampton. 



Ptekygisus, n. g, ; Isopteryx, Guenee* 

 76. Pterygisus ochreipennis, n. s. 

 Primaries black, changing in certain hglits to dark chocolate ; 

 an ochreous spot at base of inner margin ; a paler ochreous band 

 from the median vein to the inner margin at basal fourth; a 

 minute spot of the same colour obliquely above the latter within 

 the cell ; two white spots placed transversely in the middle of the 

 wing ; a small pale ochreous spot obliquely below the latter close 

 to inner margin ; a quadrate white spot immediately beyond the 

 cell ; an ochreous subapical costal spot ; three smaU ochreous 

 discal spots on the median interspaces, forming a transverse 

 tapering line ; fringe alternately black and white ; secondaries deep 

 ochreous; the centre of the costal border, a tapering abbre- 

 viated -shaped streak just before the middle, an angulated discal 

 line and the outer border (sinuated in the middle), black; thorax 

 brown; abdomen grey, pale testaceous at the base. Expanse of 

 wings, 18 mm. 



Peak Downs. 



GoNOCAUSTA, Led. 



77. Gonocausta I asuridia, n. s. 

 Like the small genus Asura {Lithosiidce) in coloration ; primaries 

 above with two ochreous spots towards the base of the costa, an 

 oblique cream-coloured streak from the second of these spots 

 almost to the inner margin ; and two broad cream-coloured bands, 

 central and discal, connected near the centre so as to form the 

 letter W , thus ; fringe whitish, with the middle, the apex, and the 

 external angle, black; secondaries ochreous, streaked with black 

 at the base ; the outer half of the costal border, a broad apical 

 patch, a smaller anal patch, and a narrow external border uniting 

 all together, black ; fi-inge alternately black and white ; body dark 

 chocolate -brown ; the head and back of tegulte pale ochraceous ; 



* Preoccupied in Neuroptera (Pictet, Hist. Nat. Neur. Perhdes). 



TKANS. ENT. SOC. LOND. 1880. PAKT IV. (,JDEC. '2 (J, 



