268 BRITISH BUTTERFLIES. 



dull green, darker on dorsal line, paler along dorsal flanges, in a 

 narrow oblique line on slope, and another about spiracle. The lateral 

 flange is broadly red, a pinkish flesh colour, tending to brick red at 

 margin, where it adjoins slope above, and ventral surface below. 

 Each dorsal hump has three or four largish dark (not black) hairs, 

 these hairs are in the line of iii, and the flange carries a sparse 

 fringe of long pale hairs, the largest abouc 03mm., paler ventrally. 

 October 6th, 1907. — This specimen has moulted since yesterday, for 

 the third time, and is now in fourth instar — green with reddish border 

 and hairs, green head with reddish jaws and black eyespots ; very 

 hairy — may no doubt be more advantageously examined when it has 

 grown somewhat. October 15th. — Has been feeding well since last 

 entry, it is now bunched up on a leaf stalk and is probably thinking of 

 an approaching moult. It is 4'5mm. long, and 2-5mm. wide, and 

 2mm. high. It is deep apple-green, with slightly darker dorsal line, 

 and red or pinkish- brown broadly along the lateral flange and some 

 way below it. The humps of dorsal flange are very prominent, and 

 the slope has on each segment a hollow below this hump and another 

 above the spiracle, not quite united, but giving the segment the 

 appearance of having the margin raised, the two margins curving 

 round and meeting below spiracle, above lateral flange. The 

 latter is prominent, and makes about the difference between 

 height and width. There are two pale oblique lines on each 

 segment between the two hollows ; it is difficult to say how far 

 they look more evident owing to reflections of light from the 

 curved surfaces. The hairs, finely spiculated, are very numerous, 

 about 0'6mm. long laterally, a little less dorsally, and shorter 

 elsewhere ; they are colourless or slightly ruddy, and their bases are 

 quite smooth. There is a patch in centre of dorsum of the 7th 

 abdominal segment, surrounded by a ring of minute dark lenticles, a 

 central slit is not clearly seen, the post-spiracular glands on eight 

 appear to be present, a pale patch of different skin-surface being- 

 visible. The spiracles are on short columns. (Of the second lot, now 

 October 15th, about to undergo second moult [one just moulted] , four 

 are dead, simply died resting on leaf, with no definite cause observable. 

 These larvae did not eat their cast skins — is this the cause of weak- 

 ness?). October 31st, 1907. — The first specimen (on Erodium) has 

 now been some ten days lethargic and contracted on a silk pad on the 

 glass, full-grown in 4th instar, 5mm. long, 2mm. broad, apparently 

 means hybernating. The second batch are now apparently resting for 

 third moult ; they are very short (2-5mm) and broad (l-3mm), green with 

 reddish margin and distinct whitish oblique lines on "slope," two in each 

 segment. February 22nd, 1908. — Found a larva of medon beneath a leaf 

 of Helianthemum on a potted plant; several leaves about had been eaten, 

 but at what date may be doubtful. Another one, in a glass tube, with- 

 out anything but a bit of blotting paper, kept in cellar all the winter, 

 has much the same appearance as the one on the plant. Others in 

 tubes with bits of plant were dead and mouldy. The living larva? are of 

 a bluish green with red dorsal stripe and the flange broadly and brightly 

 red. The hairs of the crests and flanges are long. Length nearly 4mm. 

 March 14th, 1908. — The two larvae are going on well in test tubes, 

 one has just moulted to its last skin, the other is laid up. In colouring 

 they are identical, a fine apple green, with narrow reddish dorsal line 



