New or little-known Heterocera from Madagascar. 93 



Antennae and palpi brown, head and jmtagia pale olive; legs 

 white, abdomen and thorax purplish grey, paler below. Fore- 

 wing whitish, with a purple cloud occupying the centre of the wing, 

 and leaving a narrow pale external margin ; traces of a dark basal 

 blotch edged with white externally; a sinuous fine white ante- 

 median line edged with darker; two dark dots in the central area, 

 followed by an oblique fine white angulated postmedian line; the 

 subterminal line takes the form of six dark dots on the pale apical 

 area; there is a dark terminal line extending half way down the 

 wing; fringes pink. Hind-wing uniformly grey, with pale fringes. 

 Exp. 26 mm. 



Polydesma rectefasciata, sp. n. Plate IV. 



Head and thorax fawn-colour; antennae, legs, and palpi dark 

 brown with numerous pale grey hairs ; abdomen fawn-colour above, 

 the crests darker, paler below. Fore-wing hind-margin subangular, 

 fawn-colour; antemedian line wliitish edged with darker, much 

 angulated and interrupted; stigmata represented by three minute 

 dots, dark, edged with paler; from just before the angle to the 

 costa there is a group of fine lines, nearly straight; the first is 

 white, the second dark, the third pink, the fourth wider and dark 

 brown, the fifth pale ochreous, forked at the top and expanding 

 into an apical patch in which are two dark dots; beyond these 

 lines there is a broad pink area. Hind-wing yellowish, broadly 

 margined with fuscous, but again yellowish at the outer margin; 

 a few whitish dots at the angle. Underside uniformly whitish 

 thickly irrorated with black, a black transverse stria and central 

 dot in both wings. Exp, 42 mm. 



Polydesma tessellata, sp. n. Plate IV. 



Anteimae, head, and thorax dark brown, palpi brown outside 

 and ochreous inside; abdomen dark brown above, ochreous be- 

 neath, legs ochreous. Fore-wing hvovm. with violet shade, the 

 costa with a series of dark brown spots ; a basal patch of ochreous 

 irrorated with black, followed by an irregular double violet line ; an 

 indistinct dark median line and a strongly marked dark postmedian 

 line ; the reniform stigma outlined with a pale line, and with internal 

 lunule; the subterminal line much angulated, double, and whitish, 

 followed by a series of dark marks outlined with paler, and a thin 

 terminal pale line, fringes rather paler. Hind-wing similar to fore- 

 wing, the pattern of the outer portion forming a continuation of the 

 pattern of the fore -wing. Underside ochreous, with lunules, and a 



