LIFE-HISTORY OF LYC.ENA SEPHYRUS VAR. UHRYKI, 



169 



expanding crown. When feeding on the leaves, only the cuticle of 

 one side is eaten, so that a thin membrane is left on the other. Just 

 before the third moult the larva measures 3-2aim. long. 



The first larva moulted the third time on April 12th, just a month 

 after quitting its hibernaculum. 



The cast skin is not eaten after moulting, and so far this specios 

 shows no signs of cannibalism. After the third moult the larva eats 

 completely through the leaves. 



Nine days after the third moult it measures 7*0mm. long. 



The head is shining black. The ground colour of the body is light green, 

 with a whitish stripe along each side of the dorsal furrow and another along the 

 lateral lidge bordered on each side by iMnkish or dull lilac ; on the side are two 

 rows of pale olive oblique stripes. The surface is densely sprinkled with white 

 serrated hairs of difTerent lengths, each rising from a tubular blackish base. 



The honey-gland on the tenth segment is surrounded with lenticles and very 

 short curved hairs. Just below and behind the spiracle on the eleventh segment 

 is a pale retractile tubercle. 



In this stage they seem especially fond of feeding on the compact 

 shoots of unexpanded leaves, mto which they eat the r wav and feed 

 on the whole of the interior. The fourth moult occurred on April 2stb. 



After the fourth and last moult, fully grown, when about 340 days 

 old, the larva measures, while crawling, 15-Omm. in length. 



It is of the usual I.?/("((e"'''shape, with a slight medio-dorsal furrow, the sides 

 sloping, and a dilated lateral ridge. The head is black and shining, and is hidden 

 under the hood-like anterior segment while resting. The '2nd to 9th segmenis, 

 inclusive, are humped dorsally, and the last three posterior ones are compressed. 

 The honey gland and tubercles are similar to the previous stage only somewhat 

 more developed, and the minute hairs surrounding the former are straight instead 

 of curved. The spiracles are whitish. The surface of the body is scattered over 

 with minute lenticles and densely covered with hairs, all extremely short, excepting 

 those bordering the dorsal furrow and along the lateral ridge, which are moder.itely 

 well-developed and form a fringe round tlie larva. The dor.sal hairs are likewise 

 fairly long; all are white and serrated. The ground colour is a whitish-^^reen 

 medio-dorsal stripe and a double row of oblique stripes along the side, and a lateral 

 lilac-pink stripe intersected by a white line. The ventral surface, enclosing the 

 claspers, is whitish-gieen, the eggs are ochreous green. Previous to pupation the 

 larva assumes a pale ochreous hue. 



The first larva pupated on May 20th, followed by others pupating 

 at intervals during the following month. 



The pupa measures lO-omm. long. The head and prothorax are uniformly 

 rounded, the meso-thorax is swollen and rounded, it is sunken at the meta-thorax 

 and first abdominal segment, the abdomen is slightly swollen in the middle, 

 bluntly attenuated, and the anal segment is rounded and without any cremastral 

 hooks. The ventral surface is very slightly undulating in outline. 



At first the pupa is of similar colouring to the larva but transculent. 

 It very gradually assumes a rather more opaque appearance. 



When eleven days old it is of a light green colour, with a darker olive-green 

 medio-dorsal stripe, extending along the abdomen and bordered by a pale greenish 

 line followed by a broader dull pinkish stripe, a series of raiher oblique pinkish 

 markings and a darker spot above each spiracle, also a dull pink lateral stripe. 

 The spiracles are whitish. ' The head and meso-thorax are slightly pinkish. The 

 eye liinule is dark brown. The wings remain translucent, tin>^ed with pale 

 ochreous, and show the whitish neuration of both pairs of wings. 



The whole surface is covered with very line raised reticulations, which are white 

 on the wings and central surface of the abdomen, and brown over the rest of the 

 pupa. Excepting the wings, the surface is sprinkled with minute brown lenticles 

 and numeious tiny white bristles with brown disc-like bases. The larval honey- 

 gland shows as a small central brownish scar and a very small detached abrasion 

 at each end. 



