EHAGASTIS. 477 



edged very narrowly with black ; oblique stripes on 5 to 10, 

 that on 5 formed of a series of round white spots, one on each 

 of the last three secondary rings and extending on to the 

 first two rings of 7, the first very small, others increasing in 

 size backwards ; those on 6 to 9 broad, white, on the last 

 secondary ring of each segment broken by a transverse green 

 line into a transverse, oval spot, and extending as smaller 

 white spots edged with dark green on to the anterior two 

 or three rings of the segment behind ; that on 10 running 

 across 11 and 12 to base of horn, white edged above and 

 below with dark green. Horn reddish-brown or purplish, 

 the tubercles brown ; legs red. Spiracles yellow edged with 

 green. 



In the dark- coloured form the green colour is replaced 

 by a rich brown, markings the same as in the green form. 

 Length 90 mm. ; breadth 14 mm. ; horn 8 mm. 



Pupa. — Very similar to that oi aurifera in shape and surface ; 

 tongue -sheath radially striate. Cremaster triangular, tip 

 with two sharply pointed polished shafts, each with a short 

 spine projecting outwards from near its base ; upper surface 

 rugose, lower deeply grooved* Tongue -sheath brownish-red ; 

 head, thorax and wing-case dark brown in dorsal area, brownish- 

 red with dark brown streaks and lines elsewhere ; fines of 

 brown tubercles along veins of wing-case ; wing-case separated 

 from abdomen by a soiled whitish line, not so conspicuous as in 

 aurifera ; abdomen yellowish-brown, the sides with numerous 

 short blackish longitudinal lines ; spiracles black, those on 

 6 and 7 lying on small black patches round which the line 

 dividing wing-case from abdomen runs ; the others lying on 

 small whitish patches ; cremaster dark brown. Length 55 mm. ; 

 breadth 10 mm. 



Fellowes Manson, in "' Rare and little known Sphingidae," 

 Journ. Bombay Nat. Hist. Soc. xxvii, 1921, p. 753, describes 

 a larva and pupa which he states to be those of R. olivacea, 

 but his description of the larva agrees with that of R. albo- 

 marginatus albomarginatus, and he must have confused the 

 two species, especially as he gives the food-plants as Vitis 

 vinifera Linn, and Hydrangea Linn., the former being the 

 food-plant of aurifera and confusa and the latter of a. albo- 

 marginatus. 



Habits. — Food-plants : usually Impatiens Linn., family 

 Geraniaceae, but also feeds on plants of the family Aroideae. 

 Anterior segments of larva strongly retractile ; the dorsum 

 becomes suffused with greyish (in the green form) and all the 

 markings darker before pupation. Other habits the same as 

 those of aurifera. Eggs and larvae may be found from May to 

 October, and there are probably several broods in the season. 



