306 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XX. 



what longer and look finer from their colouration which is black and 

 translucent whitish in bands ; the head also differs. The shape of the 

 head is heart-shaped, broadest across vertex, with a depressed line down 

 the centre of face ; is light yellow in colour with a large, shiny, black spot 

 near vertex of each lobe and another lower down, smaller ; the head is as 

 broad as segment 2. The body is cylindrical, slightly constricted at 

 segment-margins ; anal segment perpendicular to longitudinal axis of body, 

 rather high. Spiracles black oval, large, flush. The surface of the body is 

 covered with minute white tubercles, of which there is a more or less dis- 

 tinct subdorsal row ; head, base of legs as well as prolegs with moderately 

 long, fine hairs ; the body is besides armed with six longitudinal rows of 

 cylindrical, finely setiferous, flat-topped spines, one subdorsal, lateral and 

 subspiracular to each segment 5-12 ; segments 2-4 and 13 have each a sub- 

 dorsal spine and there is a lateral one on the common segment-margins 2/3 

 and 3/4 and one, subspiracular (where the spiracle would be where there 

 one), half the way between front margin and extremity of segment 14. 

 Each spine proceeds from a black swelling or tubercle and is colourless with 

 five or six black rings, the last two rings being at the extremity of the spine ; 

 from each ring proceeds a whorl of fine sette ; the basal setee shortest ; the 

 top ones black ; the basal ones white as a rule. The colour of larva is an 

 oily looking rose brownish, the rose colour being more pronounced at the 

 two extremities ; anal segment with yellow flap ; there are some black sub- 

 dorsal spots between the spine on segment 13 and that on segment 14 on 

 each side ; there is a subspiracular, zigzag white line from segments 4-12 ; 

 the belly is bluish-green and the legs yellow. L : 30 mm. ; B : 5 mm. 

 Spines all of equal length and very nearly as long as body is broad. 



Pupa. — Similar to that of Atella phalantha except that some of the tuber- 

 cles have long curved spines from their tips. Head square ; rather flat dor- 

 sally ; eyes each with a short conical, porrect tubercle ; segment 2 with a 

 slight ascent towards thorax in dorsal line ; thorax square seen from above, 

 convex ; the wings slightly expanded from shoulders to about segment 5 ; 

 the constriction dorsally little : laterally wide and shallow. The abdomen 

 is circular in transverse section after segment 9, short, thick and curved 

 down at the end so that the pupa hangs parallel to the surface it is attach- 

 ed to, the suspensory surface of the cremaster (the extremity) being longer 

 than broad for that purpose ; the cremaster is at right angles to longitudi- 

 nal axis of the pupa. Spiracles are the same colour as the body, oval and of 

 ordinary size. The surface of the body is shiny and is set with the follow- 

 ing tubercles : a lateral one on segments 2, 7, 9, 11, and a laterodorsal one on 

 segments 3-6, 8 and 10 ; the lateral ones (segments 2, 7, 9, 11) being pro- 

 longed each into a long, thin, curved, conical spine, the pair on segment 7 the 

 longest (6 mm), those of segments 9 and 11 shortest (3 mm), being only half 

 the length of the longest. The colour of the pupa is generally a bright, light 

 or darker blue-green, the colour varying somewhat in different individuals. 



