320 LEPIDOPTERA. 



Mr. H. T. Thouless ; in these the transverse markings, though 

 not wholly obliterated, are partially so, and the nervures are 

 more deeply blackened. Specimens somewhat similar but 

 hardly so dark have recently been found in the South of 

 Scotland by Mr. W, Grant Guthrie ; and others on Cannock 

 Chase by Dr. Freer. 



On the wing in July and August, sometimes even at the 

 end of June. Occasionally specimens of a partial second 

 generation, and of smaller size, are found in September, and 

 Mr. F. J. Hanbury has observed this second brood commonly 

 in the Isle of Wight. 



Larva elongate, twig-like, wrinkled at the sides ; head 

 slightly bifid, flattened in front ; sixth segment with two 

 very slight lateral protuberances below the spiracles ; anal 

 prolegs spreading. Very variable in colour and markings : — 

 dull purple, clouded with ochreous, and with more or less 

 ■distinct indications of ochreous dorsal lozenges ; or ochreous 

 with grey dorsal lozenges ; or unicolorous dark dull purple ; 

 ■on the undersurface is a very conspicuous pale ochreous or 

 whitish longitudinal band, margined with black, and enclos- 

 ing a dark grey line. (C. Fenn.) 



Mr. Edward Newman describes it thus — the colour of the 

 head is dark umber-brown ; the face approaching to black, 

 the crown paler, the palest part of all being the ridge where 

 the crown and facial disk unite ; body rich umber-brown, 

 exhibiting traces of three slender white dorsal stripes, of 

 which the middle one is straight, and bordered, especially on 

 the second and third segments, with black ; the anterior 

 margin of the second segment is also black ; the lateral white 

 stripes are waved and all three are interrupted at intervals, 

 and broken up into dots ; there is a pale and tolerably broad 

 medio-ventral stripe, delicately bordered on both sides with 

 pure white ; on each side of this is a similar stripe rather 

 indicated than expressed ; between the ventral and anal pro- 

 legs the ventral surface is pale. 



