180 



SPHINGID^. 



9. In Sikkim and Assam specimens the mesial tubercle 

 of vaginal plate heavy (fig. 35 I), globose, more or less faintly 

 grooved in middle, while in those from Ceylon it is very 

 prominent, constricted at base, knob -shaped, sulcate. 



Hab. W. and E. Himalayas, S. India, Ceylon and the 

 Andaman Islands. We have bred it in the W. Himalayas 

 (Siwalik Mountains) and in S. India. Common and widely dis- 

 tributed, but prefers thickly wooded areas with heavy rainfall. 



Egg. — Slightly depressed ovoid ; surface smooth to the 

 naked eye, but under a strong lens irregularly superficially 

 pitted ; colour very pale green or yellow. Length 2-5 mm. ;. 

 breadth 2-0 mm. ; height 1-5 mm. 



Larva : — 



1st instar. Head round and large ; body long and thin, 



Fig. 37. — Marumba dyras dyras (Walk.), $. 



cylindrical ; horn long, straight, tip shortly bifid ; the ends, 

 of the anal claspers extending behind the point of anal flap : 

 surface of head dull, covered with minute tubercles ; body dull ; 

 colour of the head and body yellowish -white ; the basal three - 

 fifths and the terminal fifth of the horn black, the middle fifth 

 pale yellow ; spiracles white. 2nd instar. Head triangular, 

 with a short process rising from the vertex of each lobe, the 

 two processes closely appressed except for a short distance 

 near the tips. Surface of head shining and smooth except for 

 two lines of prominent pointed tubercles on each side, one line 

 running from near the vertex of each lobe down the side of 

 the clypeus and the other separating the face from the cheek, 

 and a few scattered tubercles on the cheek. Body long and 



