THERETRA. 455 



patch at base of median vein ; an oblique grey streak 

 near base of inner area ; three very obscure, waved, black 

 antemedian lines ; a black speck in cell, with a grey streak 

 from it to beyond end of cell on R 2 ; three indistinct, dentate, 

 black postmedian lines ; grey streaks on veins of outer area 

 crossing a nearly straight whitish submarginal band which 

 narrows to apex and to just above tornal angle. Hind wing 

 fuscous, basal and inner areas greyish ; traces of a postmedian 

 band ; cilia grey. Underside suffused with pink, the outer 

 area greyish ; an indistinct waved black postmedian line. 

 Expanse : 62 mm. 



Hab. E. Himalayas (Sikkim, at light, 1,800 feet). Very 

 rare ; the early stages unknown. A $in the British Museum ; 

 a ^ in coll. Charles Oberthur. 



168. Theretra pallicosta (Walk.). (Fig. 118, <J; PL VI, fig. 12, 

 larva, fig. 13, pupa). 



Chasrocampa pallicosta, Walker, 1856, p. 145 (Sylhet ; Hong-Kong) ; 



Butler, 1879, p. 1, pi. xlii, fig. 2 ; Hampson, 1892, p. 94. 

 Gnathothlibus pallicosta, Moore, 1882, p. 21, pi. lxxxiv, fig. 6. 

 Theretra pallicosta, Roths. & Jord., 1903, p. 788; Mell, 1922, 



p. 313, pi. xii, figs. 4-12, pi. xiv, figs. 17, 18, pi. xix, figs. 22, 23 



(pupa), pi. xxx (xxxii), fig. 2 (larva), pi. xxxii, fig. 3 (<$) ; Seitz, 



1929, p. 567, t. 68 b. 



Imago. — <£$. Head and thorax chestnut -brown ; thorax with 

 a white dorsal stripe and a similar lateral stripe from tip of 

 palpus to end of thorax ; abdomen with first two segments 

 chestnut-brown, rest brownish-pink, paler on the sides. 

 Fore wing chestnut-brown, costa buff- white ; inner margin 

 narrowly white from tornal angle, the thin white edge curving 

 on to disc and becoming broader there ; a buff-white stigma ; 

 lines straight, nearly parallel with margin, one only distinct 

 and this dentate. Hind wing bright pink, base pale yellowish, 

 cilia yellowish- white. Underside of thorax and abdomen 

 the same colour as the upperside ; wings brownish-pink, 

 fore wing with costa and inner margin pale, a dusky dot at 

 end of cell ; hind wing with a post-discal and a median dotted 

 line, anal margin broadly yellowish. Opening of palpus 

 partly covered by single long scales of the first and second 

 segments. External row of spines of first protarsal segment 

 doubled and trebled. Expanse : $ 70-86 mm., $ 78-90 mm. 



<J. Tenth abdominal segment of the ordinary shape, tergite 

 feebly sinuate, sternite rather narrow and pointed. Clasper 

 with over 10 large scales ; harpe long, slender, horizontal, 

 apex rounded in dorsal view, flattened. Penis-sheath : 

 apical edge dorsally rounded-produced, symmetrical ; on 

 right and left side a dentate process pointing proximad, 

 left process the longer and more slender. 



