Early Stages of Alhulina pheretcs. 401 



(this proved to be so) in its last skin, if one may judge 

 (1st) from its being in fourth stage during hibernation, 

 and (2nd) by the density and length of the hairs, which 

 will obviously stand considerable spreading as the larva 

 grows. 



April 1. — Is to-day eating down the (young and suc- 

 culent) petiole instead of merely the leaflets. It is now 

 more distinctly of a dark green colour, with an overlying 

 grey tone, largely due to the hairs and dark hair bases, 

 but also to the dorsal and oblique dark lines. 



April 3. — Eleven mm. long, dark green with darker dor- 

 sal band and oblique lines, not so marked on second 

 thoracic or seventh abl. segments as between, wanting before 

 and behind these, a pale lateral line, looking like a yellow 

 thread sunk some distance beneath the surface, line of 

 honey -gland well marked, the fans on eighth abdominal 

 are marked by whitish spots. These fans were seen on 

 one occasion extended, a transparent green cylinder, with 

 flat top, rather higher than wide, and with a number of 

 fine hairs on top and just below, of a length about equal to 

 thickness of cylinder. Any spiculation was not observable 

 Avith a hand lens. 



April 9. — Has grown considerably and feeds constantly, 

 having much damaged the plant it is on. It is now 13 mm. 

 long when moving. The yellow lateral line is brighter, 

 and has a slight dark shade along its upper border. It 

 does not look as if sunk so deeply below the surface. 



April 10. — Put on Colutea, its own plant being practically 

 exhausted, it set to, at once, to eat the leaves in their 

 whole thickness, they are about f of an inch long. 



April 15. — Has got a good deal thicker, but has for the 

 last two days been lethargic and keeping on the bottom of 

 its jar. It seems desirous of finding a place to pupate, 

 but moss and other provisions made for it do not please it ; 

 it now rests on bottom of glass jar. 



April 21. — Has remained quite quiescent since last date 

 (15th), the thoracic segments enlarging at the expense of 

 the others, it is entirely without any spinning, nor though 

 it wandered, apparently in search of suitable quarters, did 

 I see it make any attempt at spinning. This afternoon it 

 changed to pupa; it seemed to be a very slow process, 

 lasting from about 3.15 to 4.30 p.m. The newly-changed 

 pupa is quite green, with only a very small black spot for 

 the eyes, less than a quarter of the glazed eye surface. 



