of the Australian PyraUdina. 307 



Tetracona, n. g. 



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

 Antennae three-fourths of fore wings, in male filiform, ciliated with 

 tufts of long ciUa (2). Labial palpi moderate, arched, ascending, 

 basal joint with dense scales forming a terminal projection beneath ; 

 2nd joint scaled so as to form two similar projections, in middle 

 and at apex ; terminal joint with a fourth similar projection 

 whence scales diminish to apex, so as to appear obHquely truncate. 

 Maxillary palpi very short, filiform. Posterior tibiae with outer 

 middle-spur one-fourth, outer end-spur two-fifths of inner. Abdo- 

 men elongate, slender, in male with a very small bifid anal tuft ; 

 valves retracted, clothed with fine loose hairs, which rise from the 

 base and are withdi-awn or exposed with the valves. Fore wings 

 with vein 11 moderately long and oblique. Hind wings sUghtly 

 broader than fore wings ; 3, 4, 5 approximated at base ; 7 out of 6 

 near origin, anastomosing with 8 to one-third. 



Probably allied to Agrotera; characterised by the 

 peculiar four-tufted palpi, of which the terminal joint 

 resembles that of Agrotera, but is also found in other 

 genera not nearly related. 



Tetracona amathealis, Walk. 

 Mdiodes amathealis, Walk., 348 ; Pijralis ornatalis, ib., 

 SuppL, 1246. 



g^, 2, 17 — 21mm. Head, palpi, and thorax reddish orange, 

 mixed with pale yellow. Antennae whitish ochreous, spotted with 

 dark fuscous above. Abdomen ochreous, three basal segments 

 mixed with yellow and orange on back, three terminal segments 

 suffused with whitish above. Legs white, anterior tibiae ochreous, 

 tarsi with two ochreous rings and a subapical black band, middle 

 tibiae fuscous above. Fore wings moderately broad, triangular, 

 narrow at base, costa at first straight, posterior half moderately 

 arched, apex obtuse, hind margin somewhat bowed, rather strongly 

 oblique, scales on inner margin dilated before middle ; rather hght 

 purphsh grey ; a sHghtly irregular straight dark fuscous line from 

 two-fifths of costa to before middle of inner margin ; basal area 

 up to this line wholly pale yellow, mixed with reddish orange, 

 with a short obhque fuscous mark on costa near base ; a suffused 

 whitish central fascia parallel to first line, sometimes indistinct ; a 

 small black discal dot ; a narrow orange irregularly dentate fascia 

 from three-fourths of costa to three-fourths of inner margin, mixed 

 with pale yellow, and suffusedly margined with blackish ; a row of 

 fine black linear marks along hind margin ; cilia pale whitish grey, 



