PLUSIID.E. 7.j 



PLUSIODONTA CHALSYTOIDES (I'i.atk \ry.i, Fi,-,. \,\a, i, larva), 

 Plusiodonta r/idlsi/toidcs, Giienee, Noct. ii. p. 3(>() (18o2). 

 Deva conducens, Walker, Catal. Lep. Ilet. H. M. xii. p. 963 (18o7). 

 Pliisia afjens, Felder and Rogonli. Nov. Voy. Lep. iv. pi. 110, fig. 32 (1874). 



Forewing dull oclireous olive-brown ; base of the wing with an irreguhu- pui'plish- 

 cinereous patch, which is bordered by an oblique silvery-white streak from the costn, 

 followed by some gilded yellow ferruginous-bordered lilacine-lined transverse irregular 

 marks, an antemedial blackish lilacine-bordered sinuous line, and a very oblique discal 

 angular blackish duplex line, which is also bent inward to the costa at the lower 

 subcostal vein, the black portion of the line terminating at the lower median vein, 

 and its lower end being ferruginous-brown, this line is also bordered by a lilacine- 

 grey line ; along the outer margin is an elongated upper and short lower gilded-yellow 

 black-lined mark, and a marginal row of lilac-grey dentate lunules ; an indistinct 

 gilded-yellow lilac-grey bordered reniform mark : hindwing and abdomen dusky 

 cinereous-brown ; cilia cinereous. Thorax, head, palpi, and legs ochreous olive- 

 brown. 



Expanse, <J 1, ? 1| inch. 



Larva with twelve legs ; violet-black, with grey speckles and streaks ; a purplish 

 patch on eighth and twelfth segment; head reddish. Pupa narrow, purplish-black, 

 enclosed within an elongated purplish-grey streaked cocoon. 



"Feeds on Cocculus macrocarpus." (Tliwaites.) 



Genus BIRTHA. 



Birtha, Walker, Catal. Lep. Het. B. JL xxxiii. p. 976 (1865). 

 " Male. Wings broad : forewings subfalcate, hardly acute ; exterior border 

 slightly rounded and oblique, second inferior vein as near to the third as the first, 

 fourth not very remote from the third. Body moderately stout ; palpi stout, curved, 

 clothed with very short hairs, ascending above the vertex, third joint conical, not more 

 than one-tenth the length of second ; antennae slightly pectinated, setose towards the 

 tip ; legs rather slender, hind femora and tibiffi with a long fringe, spurs long, slender." 



BIRTHA INSULATA. 



Birtha i/isulata, Walker, Catal. Lep. Het. B. M. xxxiii. p. 976 (I860). 



" Male. Fawn colour, pale cinereous fawn colour beneath : forewings with seven 

 reddish-brown pale bordered spots ; an antemedial baud formed by the first, second, 

 and third spots, of which the second is very much larger than the others, and extends 

 to the interior border ; fourth, fifth and sixth near the costa in front of a large cine- 

 reous patch which extends to the interior border, and is bordered with brown on the 

 inner side, and is partly speckled with black; another cinereous patch bordered with 



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