78 THE LEPIDOPTERA OF CEYLON. 



hindwing sliort, broadly triangular, exterior margin convex; costal vein extending 

 to apex ; subcostal curved upward and slightly touching the costal near its base, two 

 subcostal branches on a footstalk half beyond end of the cell ; discocellular very 

 slender, bent inward before the middle ; upper median from angle above end of the 

 cell, two middle medians from angles at end of the cell, first or lower at one-third 

 before the end ; submedian and internal vein straight. Thorax broad, pilose ; 

 abdomen slender ; palpi stout, very hairy, projecting much beyond the head ; legs 

 short, pilose, hind tibise with two apical spurs ; antennae broadly bipectinated. 

 Female : wings rudimentary ; antennae crenulated. Body very large. 



ORGYIA POSIICA (Plate 109, Fig. 1, la, (J ?, \b, larva). 

 Lacida postica, Walker, Catal. Lep. Het. B. M. iv. p. 803 (1855), S . 



Male : forewing rufous-brown ; with an indistinct subbasal, an antemedial, and 

 a postmedial transverse zigzag black line, and three short longitudinal subapical 

 streaks ; medial area more or less powdered with white scales ; a white lunate inner- 

 bordered black-speckled reniform spot at end of the cell ; a submarginal pale-brown 

 zigzag line powdered with white scales : hindwing dull fuliginous-brown. Body, 

 palpi, and legs rufous-brown ; antennae fuliginous-brown. Female : wings rudi- 

 mentary; pale greyish-brown; abdomen greyish-brown, anal tuft brownish. 



Expanse, ^ 1 inch. 



Larva yellowish, with a dorsal and two lateral purple-brown bands ; head red ; 

 sparsely covered with short purple-brown hairs ; two long tufts of purple-brown 

 haii's projected over the head and two over anal segment; two lateral tufts of whitish 

 hair from fifth and sixth segment, and a dorsal tuft of short yellow hairs on fifth 

 to eighth segments ; spiracles brown. Pupa hairy ; male purpHsh-olive, female 

 olivaceous. 



"Feeds on GcBsalpinia." (Thwaites.) 



ORGYIA CEYLONICA. 



Orgyia ceylonica, Nietner, Obs. on the Enemies of the CofFee-tree in Ceylon, p. 19 (1861). 



" Male : brown, variegated with a little black and white. Female with rudimentary, 

 whitish scale-like wings, dirty yellowish, covered with fine black hair, rather thickly 

 towards the extremity of the abdomen and sides. 



Expanse, c? f , ? f inch long. 



Larva 1\ inch long, brown, underside and head reddish, covered with yellowish 

 hair, two long slender tufts of dark hair on each side of the head, like horns, and 

 another behind like a tail ; four short stiff white tufts upon the anterior part of the 

 back, and two similar ones on each side. Spins a thin cocoon, in which the chrysalis 

 rests for two weeks. Not uncommon from October to December." 



