304 SPHINGID^E. 



pairs branched shortly above base. Colour grey splashed and 

 dotted with fuscous ; front of tongue -sheath pale orange 

 dotted with fuscous ; wing-cases and abdomen marked with 

 black strigae ; a black interrupted ventral stripe on segments 

 9, 10 and 11 ; spiracles, spiracular lobe of segment 3 and 

 cremaster dark reddish -brown. Length 50 mm. ; breadth 

 11 mm. ; tongue-sheath projecting about 2 mm. in front of 

 head. 



Habits. — Food-plant ; Pothos scandens Linn., family Aroide a?. 

 The young honey- coloured larva is very difficult to detect, 

 as it lies along the midrib on the underside of a tender whitish 

 leaf. In the first instar the long black horn is moved freely 

 in a vertical plane when the larva is moving. In later instars 

 the green- and brown- coloured larva .lies during the day along 

 the stem of the food-plant or on an adjacent tree -trunk, 

 where it is also very difficult to detect. It appears to feed 

 mostly at night. Pupation takes place in a rough cocoon 

 on the surface, formed of leaves etc. held together with coarse 

 strands of silk, with a pad of silk at one end in which the hooks 

 of the cremaster are entangled. The head of the pupa, 

 which bears a fancied resemblance to the face of a monkey r 

 often appears uncovered at the other end of the cocoon. 

 The moths are rarely caught feeding at flowers and do not 

 appear to be attracted by light. 



96 b. Panacra busiris busiris Walk. 



Panacra busiris, Walker, 1856, p. 158 (Sylhet) ; Moore, 1865, 

 p. 793 (Bengal) ; id., 1877, p. 595 (Pt. Blair) ; Cotes & Swinhoe, 

 1887, p. 11 ; Swinhoe, 1890, p. 163 (Rangoon); Roths. & Jord., 

 1903, p. 536. 



Angonyx busiris, Butler, 1881 B, p. 6, pi. lxxix, fig. 2, 



Chasrocampa busiris, Hampson, 1892, p. 89 ; Swinhoe, 1894, 

 p. 149 (Khasi Hills) ; Dudgeon, 1898, p. 410 (Sikkim, 1,800 ft.). 



Panacra busiris busiris, Roths. & Jord., 1915, p. 287 ; Mell, 1922, 

 p. 231, pi. vii (viii), figs. 1-4, pi. xiii, fig. 36, pi. xviii, figs. 11, 

 12 (pupa), pi. xxix, figs. 11 (larva), 12, 13 (imago) ; Seitz, 

 1929, p. 551, 572, t. 64 a. 



Imago. — (J$. Head and thorax dark green ; palpi pinkish- 

 brown ; delicate pinkish lines above eyes and outlining 

 collar and patagia ; abdomen brownish with darker lateral 

 patches on first two segments. Fore wing with a brown patch 

 at base, marbled with darker lines and extending further 

 along costa than along inner margin ; a white patch at base 

 of inner margin ; interspace between antemedian and discal 

 lines green like upperside of head and thorax, wide at costa ; 

 a black mark at end of cell ; marginal area pale brown with 

 three dark, curved lines, the submarginal line waved and white 

 near apex. Hind wing dark brown ; pale brown marginal 

 line widest at anal ansjle where there are some indistinct lines 



