fore wings and the red of the hind wings darkened over with dull smoky black, so that the insect when seen at a distance seemed to be wholly black. Dr. Hodgson has recently obtained several of these melanic specimens in Sussex. A form with the spots and hind wings suffused with brownish has been named ab. _obscura_, Oberthur. With regard to six-spot examples referred to this species, I am inclined to suppose that they may be the offspring of a chance pairing of _trifolii_ and _filipendulae_. That such crossing does occur in nature I have evidence, as on one occasion I found four mixed pairs, the male being _trifolii_ in each case, and the female typical _filipendulae_. This was in the Weybridge district, where I had come across a colony of the latter species and was closely examining the specimens for aberrations. The caterpillar (Plate 145, Fig. 3) is green inclining to yellowish and to bluish, with black marks on the back; a series of black streaks low down along the sides. It feeds on _Lotus corniculatus_, and on other trefoils and clover: July to May. Sometimes taking two years to complete its changes. In damp meadows the moth is out in May and June, but in marshes it does not appear, as a rule, until July, and may be found in early August. The marsh specimens, which are sometimes rather large in size, have been referred to _palustris_, Oberthur, and are treated by Tutt (_Nat. Hist. Brit. Lep._, vol. i.) as a sub-species. [Illustration] 2 Pl. 146. 1, 2. TRANSPARENT BURNET. 3. SCOTCH BURNET. 4, 5. NEW FOREST BURNET. 6-9. FIVE-SPOT BURNET. [Illustration] 2 Pl. 147. 1, 2. NARROW-BORDERED FIVE-SPOT BURNET. 3-5. SIX-SPOT BURNET. 6, 7. SCARCE FORESTER. 8, 9. THE FORESTER. 10, 11. CISTUS FORESTER. {339} In the British Isles, the species is apparently confined to England and North Wales. In the former country it is locally common in most of the southern counties; still more local in the eastern counties, and northwards to Lancashire and Yorkshire. There are records from Armagh and Fermanagh, but Kane appears to doubt the occurrence of the species in Ireland. There is no doubt that the next species has frequently been mistaken for the present one, therefore the actual range of _trifolii_ in the British Isles has probably not been fully ascertained. NARROW-BORDERED FIVE-SPOT BURNET (_Zygaena lonicerae_).