KUMICIA PHL^EAS. 389 



that there is a barer place between the spiracles and lateral flange, the 

 hairs are tolerably equally distributed ; those above the spiracle black, 

 those below pale ; brilliant white points are irregularly scattered on sur- 

 face. The larva differs from its appearance in the fourth and last 

 instars by the hairs being a little differentiated between top and sides, and 

 in having few white points. In the third instar the hairs are shorter than 

 in second instar, 03mm. down to Olmm., and are more numerous. The 

 lenticles also are much smaller proportionally, those about spiracles less 

 than half the diameter of spiracle, instead of being very like them. There 

 is some space free from hairs just below the spiracles, but, for the rest, 

 the hairs are everywhere distributed, but are still in groups ; the dorsal 

 patch contains about twelve hairs on either side, of which two larger 

 ones may represent i and ii, but others are of nearly same size ; the 

 area possesses two or three lenticles (asymmetrically placed). The 

 " slope " down to spiracle has about eighteen hairs; its larger area 

 makes it look less crowded than the dorsum ; the hairs also are smaller. 

 This area has seven or eight lenticles, of which the circumspiracular 

 three or four form part. After an interval comes the marginal group, 

 about twenty-two hairs and three lenticles ; a group of eleven pale 

 small hairs and a lenticle are at about the site of tubercle vi, and a 

 less group of smaller hairs at vii. The hairs round front and back 

 margin are very numerous. The prothoracic plate is small, tinted, 

 with two hairs posteriorly (a pair), and one or two minute ones, 

 and several lenticles. The prolegs have the two pads (usual in 

 Lycaenids), of which each has six or seven hooks, very large, long, 

 and powerful ; on the inner side of the prolegs is a separate line 

 of six or seven very small hooks. The skin-surface has a more or less 

 hexagonal epithelium. The white points (the forerunners of the 

 trumpet-hairs of pupa) are very beautiful objects when magnified, they 

 are white, with long curved branches. Suppose a fir-cone (one with 

 more numerous scales than Pinus sylvestris) had a long white spine 

 branching from each scale and curving upwards, all the spines 

 arranged in proper tactical order, it would be something like it. On 

 an end view, the white cone hairs have a slightly whorled appearance, 

 and the ends of the branches seem dilated ; most views give the 

 impression that the branches, or spicules, are not free and separate, as 

 they usually look, but are held in place by some envelope or connecting 

 medium. They are more numerous in the last instar. Fourth instar : 

 In the fourth instar, the hairs are a little more numerous, and are 

 longer than in the third ; the longest about 0-5mm. The distribution 

 is much the same, but it is difficult to draw a line between a dorsal 

 group and one belonging to the slope, and the bare space below 

 spiracle is actually narrower than in the third instar. There may be 

 forty-five hairs from dorsum to spiracle, twenty-six or so in marginal 

 group, thirteen or fourteen at position of tubercle vi. The lenticles 

 are proportionally much smaller and very numerous, fourteen from 

 dorsum to spiracle. The prothoracic plate is long, pointed at each 

 end, and with two pointed branches on each side, making it look some- 

 thing like an animal's skin nailed out to dry ; it carries four or five 

 hairs on either side. The skin between the head and prothorax, or, at 

 least, the margin in front of the marginal fringe of hairs, has very 

 numerous, and very short, colourless hairs (not skin-points) ; the pro- 

 legs have seven or eight hooks, and also about eight very minute ones 



