LAMPIDES BOETICUS. 347 



another a little higher, towards anterior margin of segment ; there are 

 certainly others, but not grouped clearly enough as to position to 

 describe. The hairs all appear to have smooth conical bases, and the 

 hairs themselves taper to a point, and, if spiculated, are too finely so to 

 be detected. In both the first and second instars the hairs appear to 

 be smooth and simple. The prolegs and claspers have two groups of 

 hooks, an anterior and posterior, each with four hooks, generally two 

 larger and two smaller, in one case a smaller one appears to be absent. 

 The true legs are dark, short and thick, but with a rather slender 

 sharp claw. Final (? fourth) instar : In the last skin, except a set of 

 lateral flange hairs, the hairs are no longer than in the second instar, 

 but are much thicker, much more complicated and varied in structure, 

 and vastly more numerous, so that any question of counting them is 

 almost absurd. In the larval coloration there is much variation ; the 

 ground colour is usually green, tinted with various amounts of red 

 dorsally and laterally, but the larvaB are not so constantly or deeply coloured 

 as are those of Langia telicanus, which occur with them, and are very 

 difficult to distinguish therefrom. In this instar, the dorsal hairs are 

 mostly darkly-tinted, especially are their bases so ; beneath, they are 

 pale and much more slender, and, on the whole, longer, and with 

 simpler bases. The bases of the longer lateral hairs are very large, but 

 their branches are comparatively small, and both hairs and bases are 

 much paler than the dorsal hairs ; except in size they resemble more 

 those of the lower surface than of the upper ; the shorter hairs of 

 the lateral flange are more like those of the dorsum. Seen 

 in a mounted skin, these are a wonderful assemblage, the 

 most numerous variety is about 0*1 mm. long, of which the 

 base is about a third (say O03mm.) ; the hair itself is thick and short, 

 more like a dagger than a hair, and is well spiculated ; the base has 

 five or six great thorns projected in a circle round it, pointing upwards 

 and outwards from the centre, so that their points are about level with 

 the top of the base and measure across, from those of one side to those of 

 the other, as much as the height of the base. Some of this pattern of 

 hair are shorter, others nearly twice as long, with both hairs and bases 

 no thicker than the others, making both look more slender ; amongst 

 them are hairs just the same, but hardly visible, owing to both hairs 

 and base being colourless and transparent. Another form of hair is 

 decidedly shorter and with a much shorter and less spiculated base ; 

 this hair is club-shaped, and is finely spiculated all over ; there are 

 intermediates between this and the ordinary hair, like a dagger 

 thickened in the middle. Lenticles scattered amongst these are very 

 similar to the hair- bases, but are much wider at the top, and, therefore, 

 cylindrical or barrel-shaped, with the side spicules much reduced, or 

 represented by short knobs or points round the top circle ; other 

 lenticles, especially near the spiracles, are rather wider, but are very 

 short, i.e., very slightly raised circles ; these have the margins more 

 or less knobbed and spiculated, and show the dotted membrane of the 

 opening. Another form of lenticle is like a tailor's thimble in form, 

 with no spicules ; this is rare. In the neighbourhood of the dorsal gland 

 of the 7th abdominal segment, lenticles are extremely abundant, almost 

 crowded together, generally of the flat form, with slight marginal 

 spiculations. Amongst these are very remarkable hairs in considerable 

 numbers ; these are referred to in the living larva as being globular ; here 



