274 THK entomologist's record. 



from the edge towards the centre, leaving the lower cuticle entire, and 

 resting on the midrib of the leaflet as before. 



On June 5th it had changed to second instar ; it was now 3mm. in 

 length, head greenish-brown and hirsute; the remainder of the 

 segments were dark green with a slight indication of a thin darker 

 dorsal stripe : in this stage it ate away all but the ribs of the leaflet, 

 commencing at the apex and working towards the base. 



On June 10th it had changed into the third instar; it was then 

 4mm. long ; the bead and the remainder of the segments were dull 

 green in colour; it was very hirsute for a Pierid larva, and covered 

 with white tubercles emitting white spines ; along the centre of the 

 dorsal area ran a thin stripe slightly darker in colour than the sur- 

 roundings ; the subdorsal and spiracular areas had a series of slightly 

 darker longitudinal stripes, which were difficult to see even with the 

 assistance of a lens ; the spiracular stripe was lighter than the sur- 

 rounding area. In this stage the larva ate the entire leaflet including 

 the ribs. 



On June 15th the larva changed into the fourth instar ; it had then 

 greatly increased in size and was 10mm. long ; it was of the same 

 colour as the leaf on which it was feeding, and had a faintly indicated 

 darker line along the centre of the dorsal area. The spiracular stripe 

 was narrow and white, except the portion surrounding the spiracles, 

 which were light crimson. The spiracles themselves were incon- 

 spicuous. 



On June 19th the larva changed into the fifth instar; it was then 

 15mm. long, of a dark grass-green colour with the exception of the first 

 and the anal segments, which were dull grass-green ; there were still 

 indications of the dark dorsal stripe which had been noticed in the 

 previous stages. The spiracular stripes were now prominent and white 

 in colour throughout, with the exception that immediately over each 

 spiracle there was a crimson blotch. The spiracles, which were 

 beneath the spiracular stripe, were black and conspicuous ; the larva 

 was very spiny, and on June 20th it had increased to 25mm. in length, 

 and on the following day to 29mm. The spiracular stripe was on this 

 day, over the spiracles coral-red, between spiracles lemon-yellow, edged 

 with white throughout the length, on the dorsal sides. On June 22nd 

 and June 23rd it fed slowly, and on June 24th suspended itself for 

 pupation, changing into a chrysalis during the night of June 25th. 



It will be seen from the above notes that only 27 days were occupied 

 by the larva to go through this stage. 



The chrysalis was 20mm. long, dull green in colour, with a line of 

 light lemon-yellow, extending from the head along the hind margins of 

 wing cases and the sides of abdomen to the anal segment. Below this 

 stripe the front three segments of the abdomen had each a brown blotch. 

 The discoidal spot was visible through the pupal envelope ; and the 

 inner margin of the external dark band on the superiors was indicated 

 by a line of black dots. 



The chrysalis commenced to change colour on June 30th, the 

 butterfly clearly showing through the pupa case, and was apparently 

 ready to emerge ; the actual emergence took place on the morning of 

 July 2nd. 



The period of the pupa stage was thus seven days, and for the whole 



