loo LEPIDOPTERA. 



Pupa half an inch long, slender, tapering to the tail ; 

 thorax arched ; antenna- and leg-cases long, the latter pro- 

 jecting ; abdominal segments with ridges of hooks. Light 

 reddish-brown ; thorax, eye-cases, and parts of the wing-cases 

 dark brown ; hooks black. In the upper part of the hollowed 

 root-stock, and readily found by examining the small dead 

 plants of thrift on the rocks, though sometimes placed too 

 deeply down in the rock-fissure to be readily extricated. 

 Beginning of June. Mr. Buckler found that in some in- 

 stances the larva fed up through the tuft of thrift, and made 

 a tube of silk and stony particles, which projected upwards 

 above the plant. I can only suppose that in these instances 

 the root-stock was too short to shelter it, as I have never 

 observed any such projecting tube in the numerous plants 

 found containing larvae and pup« collected on the coast 

 of South Wales. 



The moth is not often seen in its very restricted localities, 

 or if seen for a moment, at rest on the bare rock, is so like a 

 small slender fly that it becomes practically invisible the 

 moment it moves, the eye quite failing to follow its swift 

 flight. On one occasion, however, Mr. E. A. Atmore saw it 

 in abundance on the Cornish coast, frequenting a high bank 

 covered with thyme, about and upon the flowers of which this 

 little clearwing was flying and settling freely. 



The first record of the species in this country was of a 

 specimen taken near Torquay, more than sixty years ago, but 

 it was not again met with until 1860, when specimens were 

 taken at the same place, settling, it was stated, upon wild 

 thyme. It has since been found on many rocky portions of 

 the Devon and Cornwall coasts, and on those of Carmarthen- 

 shire, Pembrokeshire, Cardiganshire, and the Isle of Man. 

 In Scotland it has been found on the coast of the Solway 

 Firth on the west, and also at Aberdeen and Muchalls on 

 the east ; and there is little doubt that it occurs in suitable 

 places all round the Scottish coast, as well as on that of 



