164 BRITISH BUTTERFLIES. 



the surface on which resting, this lateral line along upper, and most 

 projecting, margin of lateral flange ; below it is the remainder of the 

 lateral flange, consisting (1) of the upper element forming the marginal 

 flange of these Lycaenid larvae, on each segment, this is a rounded 

 green cushion, and below this again (2) is the next element of the 

 lateral flange (which in many larvae consists of three consecutive 

 elements). In this half -fed larva this presents, on each segment, a 

 rounded, almost flat, lappet, with the segmental incisions very deep 

 between them ; below this, on the middle segments, are the broad 

 bases of the prolegs. The yellow lateral line or upper border of the 

 marginal flange forms, of course, the lower edge of the lateral slope. The 

 prothoracic spiracle large and whitish, is, in many attitudes, just in 

 line with this, the abdominal spiracles 1-6 are about one-fourth of the 

 way up the slope. Immediately above each of the abdominal spiracles is 

 an oblique pale band, above this another pale band, broader in front, and 

 further up, at the extreme margin of serration, narrow, and so bright 

 as to be distinctly yellow. These pale bands are so arranged as to form 

 continuous stripes downwards and backwards, e.g., the yellow tip on the 

 1st abdominal segment is continued on the 2nd abdominal down the 

 median band, and on the 3rd abdominal segment by the one im- 

 mediately above the spiracle. Immediately above the yellow line, and 

 in some degree involving it, and appearing below it also, is a reddish 

 patch on the 6th and 7th abdominal segments. Dorsal view : The 

 dorsal level band, which is banded laterally by the yellow tips of the 

 serrations, as seen from the side, is additionally centrally grooved ; the 

 slopes up from the bottom of this groove to yellow tips, of a deep 

 purple-brown from lst-5th abdominal segments ; on the 6th and 7th 

 they coalesce across the middle line ; the same purple marking forms 

 a broad central line from the middle of the 8th abdominal segment 

 backwards, and similarly in front on mesothorax ; the median line of 

 the ground colour. Seen dorsally, there is a slight pinkish tinge 

 outside the yellow tips of the dorsal ridges. From this view it is more 

 evident that the space between the two upper oblique lines on each 

 slope is yellower, whiter, and more solid-looking, whilst below it is 

 greener and more transparent. Hairs : The whole larva is clothed 

 with very fine, numerous, mostly deflexed hairs ; these are slightly 

 more conspicuous in spiracular region, though immediately in front 

 and below the spiracle is a small patch almost devoid of them. All along 

 the lateral flange, just below }^ellow line, they are more numerous and 

 longer, arranged somewhat fanwise, some half-dozen on each seg- 

 ment, and more than twice as long as others, i.e., about -5mm. in 

 length. There are, similarly, a number of longer hairs on lower 

 element of lateral flange. On the pro- and mesothorax these longer 

 hairs are more widely distributed and abundant, covering the prothorax 

 in front of plate, and forming a marginal chevaux de frise along the 

 anterior margin of the 2nd thoracic. These are, in fact, portions of what 

 may be called the dorsal set of hairs, the dorsal prominences all carrying 

 a set of hairs nearly, but not quite, as long as those on lateral margin. 

 On all the pale areas the hairs are white or colourless, except on the 

 dorsal groove or central part of dorsal level, where they are dark brown 

 or black, the same as on the brown markings. All the hairs apparently 

 very finely serrated. The prothoracic plate angulated, small, has a 

 posterior broad projection, a lateral wing on each side, and a narrow 



