290 



bowed, slightly waved, silvery-white ; markings light brownish^ 

 edged with dark fuscous ; a streak along basal-fourth of eosta ; a 

 streak along inner-margin from near base to anal angle ; a similar 

 streak along submedian fold from, before middle, confluent pos- 

 teriorly with this and tirst fascia ; a narrow, nearly straight, but 

 somewhat irregular fascia from near costa at about two-fifths to 

 anal ansie ; an irregular streak runnino; from this fascia above 

 middle to middle of hindmargin, somewhat interrupted before 

 junction with second fascia ; a discal spot above anterior ex- 

 tremity of this ; second fascia obtusely angulated inwards near 

 costa, running from costa at five-sixths to meet longitudinal 

 median streak before hindmargin ; an oblique triangular-like 

 apical mark, two oval spots on hindmargin above middle, upper 

 confluent with aj)icel mark, and two others below middle ; cilia 

 white, partially spotted with brown. Hindwings with hindmargin 

 rounded, somewhat waved ; white ; a moderate suboval or 

 irregular blackish-grey subapical spot. Underside of wings white, 

 with a black subapical blotch. 



One imperfect specimen bred in April, larvie found feeding on 

 Acacia pycnantha, at Blackwood, South Australia. 



This species is superficially very like inscripta, Walk., but 

 differs in having tlie discal dot, a character not shared by any 

 other known Thcdaino'. The larva is totally different, as will 

 be noted below. Larva of T. iLieroylypldca — full fed, 36 mm. 

 elongate, tapering at both ends. Head shining black, with an 

 ochreous white blaze on each side of posterior portion, and with 

 a few erect black hairs, face pale ochreous white. Body light- 

 purplish black, with numerous longitudinal waved whitish 

 ochreous fine lines, the three centre ones being thicker and more 

 conspicuous. When in motion the larva shows two scarlet spots 

 on the anterior portion of each segment ; when at rest they are 

 scarcely noticeable. On the twelfth segment are two raised 

 scarlet warty protuberances. Anal segment and claspers whitish, 

 minutely irrorated with black ; claspers rather broadly lamelli- 

 form. A broad yellow longitudinal lateral stripe along whole 

 length of body, edged on both sides with intense black. Spiracles 

 black, placed on the yellow stripe, prolegs dull crimson. Belly 

 pale emerald-green suffusedly edged with dull crimson. All 

 segments clothed with very sparse (about twelve at most) stiff* 

 black hairs ; full-fed October. Larva of T. inscripta — -Full 

 grown ; length, 26 mm. Head green, Avith a few minute blackish 

 scales. Body cylindrical, smooth ; yellowish green ; second seg- 

 ment with two briglit orange-red spots, small, one on each side of 

 dorsum placed on anterior part of segment ; a darker green, 

 yellowish edged, moderate, continuous band throughout entire 

 dorsal portion of body (anal segment excepted), sparsely dusted 



