68 DREPANA SIOULA. 



yellow, changing in four days to pink at one end, and 

 a little round the circumfereut margin, the centre 

 remaining straw-colour ; on the fifth day the pink 

 parts turn to the rich red of a ripening strawberry, 

 and on the ninth the whole surface becomes purplish- 

 brown. 



The newly-hatched larva shows a little of the pecu- 

 liarity of the adult form, as very slight rudiments of 

 tubercles can just be detected, and the hinder segment 

 bears no legs, and is carried at a slight elevation ; the 

 colour is a reddish chocolate-brown, with a darker 

 brown spot on each lobe of the head. After this point 

 I can say nothing till the larva is nearly full grown ; at 

 that time I noticed that it span many silken threads to 

 keep its food steady and to secure its own foothold, and 

 that its manner of eating was to take large pieces out 

 from the edges of the lime leaves. At times it rested 

 with the head and both the anterior and posterior 

 segments of the body elevated, holding on to the leaf 

 only by the ventral prolegs, but when walking the 

 whole of the segments were carried in a tolerably 

 level line, merely undulating a little in its progress, 

 though the anal segment had always a slight upward 

 turn. 



The full-grown larva measures one inch in length, 

 and is in proportion moderately slender, with fourteen 

 legs, the anal segment not having legs, but is much 

 prolonged to a tapering point curving a little upwards ; 

 the head much larger than the second segment, and 

 broadest near the mouth, the crown and lobes erect 

 and deeply cleft and flattened in front, as is the whole 

 face ; on the back of the fourth segment is an elevated 

 process, divided into two blunt-tipped tubercles 

 (Hiibner's figure above referred to has four pairs of 

 tubercles) ; the segments generally are moderately 

 defined above, more deeply below, and very delicately 

 wrinkled, with three or four subdivisions across the 

 back of each ; the head is pinkish flesh colour, and a 

 clear margin of this is left on the ridges of the divided 



