86 



BRITISH BUTTERFLIES. 



dorsal head-piece (of one side) is a little slip left attached to the front 

 margin of the prothorax, 06mm. wide transversely, O05mm. at middle 

 line, where it meets its fellow, and 0.15mm. towards the outer end, 

 where it ends by rapidly narrowing to a point ; it is markedly sculp- 

 tured, but has no dots, hairs or lenticles. The prothoracic piece of 

 either side is about 1mm. long at dorsal line, preserves this length for 

 two-thirds of its width, then narrows to a point, the width being 

 l*5mm.; the anterior margin is convex, the posterior concave ; at its 

 exterior half, where it is opposite the spiracle-cover, it possesses many 

 black dots, some 30 to 35 hairs, somewhat more closely placed along 

 the anterior border, and a very great number of lenticles, sparse along 

 the dorsal margin, but, in centre of piece, massed into a close phalanx 

 of about 80, to the exclusion of anything else, over an area of nearly 

 0*5mm. across ; each lenticle is from O'OSmm. to 0-04mm. across ; the 

 dorsal line (suture) is dark, and then a dark spot, larger than usual, 

 just outside the group of lenticles. The mesothorax has a dorsal 

 margin of about 2-5mm., and a front margin of about l*7mm., hol- 

 lowed out behind for the metathorax, so that it is only about l-4mm. 

 long, just above the wing-base ; the cover of the first spiracle begins 

 lmm. from dorsum, and is a long, narrow, oval of about 0'3mm. along 

 the margin of the segment ; it has the usual structure of a mass of 

 nail-like, or mushroom-like, hairs, more or less soldered together. It 

 is to be noted that, in all these Lycsenid (and all other ?) pupae, the 

 actual spiracle in the empty case remains attached to the mesothorax, 

 and has nothing to do with the prothorax. This was one among 

 many other circumstances that made me assert, many years ago, that 

 the first spiracle, though apparently in the prothorax in the larva, 

 really belongs to the mesothorax. The mesothorax carries (on each 

 side) some 30 hairs, comparatively few lenticles, and a good distribu- 

 tion of black spots, three or four touching each other more often than 

 elsewhere ; the wings are not quite so abundantly spotted, and the 

 netting is quite marked ; there is a large black spot at the base of the 

 wing (site of wing-spine ?) ; " Poulton's line " marks off a very narrow 

 margin. The metathoracic piece (of one side) is of the usual curious 

 shape, about 0*2mm. long at the dorsum, 1-Omm. at the recess in the 

 mesothorax, 1.3mm. wide, or l*6mm. along its sloping anterior margin ; 

 towards its outer front margin it has a group of five hairs and eight 

 or nine lenticles, another dorsal hair, a large black dot towards its 

 outer front margin ; elsewhere it is spotted and sculptured as usual ; 

 it has the usual backward extension at its outer margin, ending in the 

 hindwing, a faint margin of which extends to the anal angle of the 

 front wing. The 1st abdominal segment is 2mm. across and about 

 0-3mm. long ; it has two hairs that might be called the setaa of 

 tubercle ii, and several lenticles ; its sculpturing is rather faint, except 

 in what is the feature of the segment, and, as regards colouring, of 

 the pupa as a whole, viz., a large black spot occupying the whole 

 width of each end of the segment ; just inside this, and also at the 

 wing-base on the metathorax, I note a curious little spiral hair, which 

 I concluded, in another species, to be on the inner surface of the pupa, 

 and to be something drawn out (like the tracheae are) at moulting. 

 The 2nd abdominal segment is 0'8mm. wide and 2 , 7mm. across ; it 

 has about a dozen hairs on either side and a good many lenticles, as 

 well as a small cloud of about 50 to 60 anterodorsal to the spiracle. 



