180 THE entomologist's record. 



hairs intermixed. The dorsal tubercles i and ii are black, the lateral 

 ones iii, iv, v, and vi are paler. The head is still polished and semi- 

 tx'ansparent-looking on the face and mouthparts, which are very pale 

 brown approaching yellow, the remainder, sides, crown, etc., are very 

 dark brown, all but black. Younger larv?p in this skin are somewhat 

 brighter coloured, and this is chiefly due to the greater intensity of 

 the orange. 



5th {' 6th) in star (living): Length about 20mm. In shape there 

 is but little alteration, but this little is still in the direction of greater 

 stoutness at the expense of length. The chief feature is again the 

 great increase in number of hairs. The tubercles are much enlarged 

 and raised so that a greater spread of hairs is now possible. As a 

 whole the larvB? are now much darker but this is chiefly due to the 

 increased hairiness, and, in part, to the darkening of the general skin 

 surface to a dark smoky-grey. Many of the raised warts are paler 

 than before ; i, although still dark, is hardly black, ii remains black, 

 but the lateral ones are pale. The smaller hairs described as pale in 

 the last skin are now of a bright brown, and the entire increase in 

 number seems to be of hairs of this description. It is to this dense coat 

 of brown hairs that the larvie owes its characteristic colour. In the 

 larvae I am examining, the l)lack dorsal hairs still presist, but, in others, 

 which may possibly have undergone a further moult (I am still un- 

 certain as to the exact number of moults), the long dorsal hairs are 

 also brown, only darkening towards the tip, and then the colour is 

 not black but very dark brown. The orange -red mediodorsal 

 band is still a noticeable feature but appears darker, partly, no doubt, 

 owing to the general darkening ; the whitish subdorsal line of the last 

 skin is reduced to a series of detached whitish or yellowish spots at 

 the ridge of each segment just about iii, and the series of orange spots 

 between iii and iv has a tendency to combine with the remnants of 

 the subdorsal series above mentioned, sometimes forming a large 

 irregular dull yellowish spot which encloses iii to a greater or less 

 extent. The head is very dark brown, the pale yellow area being 

 greatly reduced, only the area close to the mouth remaining pale. 



/ Gth (/ 7th) imtar : On other larvfe, which possibly, although not 

 certainly, had undergone a further moult, the hairs appear even more 

 thickly set, and the head is to all intents black. Partly in consequence 

 of the denser growth of hairs and partly owing to a less intensity of 

 the black of dorsal tubercle ii, the rows of black dorsal spots (formed by 

 dorsal tubercle ii) which are so characteristic of the larva in its 4th or 

 5th skin, and a fairly conspicuous feature in the following skin, are now 

 quite inconspicuous. In the adult larvie of the second brood there 

 was again a wide variation as regards depth of colour, from a pale to a 

 very dark brown, almost black in extreme individuals. This range of 

 coloration seems to be chiefly, if not entirely, due to the tint of the 

 hairs and not to any alteration in the coloration of the skin-surface. 

 An aberration, or possibly it would be more con-ect to call it an unusual 

 form, of the larva in respect of hair-growth occui-s both in this species 

 and that of Hiiilomma iiwudira. It consists in that the hair-growth 

 arising from the warts is produced into comparatively compact and 

 prominent tufts, in which, all, or the great majority of, the haii's 

 stand more or less upright instead of spreading out at all angles from 

 horizontal to vertical in an elaborate chevaux-de-frise. This is possibly 



