SATYRID.-E. 259 



green with dark bluish gi-een dorsal line, edged with pale 

 lemon yellow ; subdorsal and spiracular lines of the same 

 pale yellow, but the subdorsal is edged above with dark 

 bluish green, and between these two lines is an interrupted 

 streak of a darker colour, with a slight tinge of reddish or 

 pink behind ; caudal fork tipped with pink. (Buckler.) 



When a little younger, grass green with the dorsal vessel 

 darker green, bordered on each side by a yellowish white 

 line, and with slender yellowish white subdorsal and 

 spiracular lines ; the bicuspid caudal prolongations are in a 

 line with the subdorsal lines, yellowish white at the sides, 

 but tipped with pink ; the head is green but dull and 

 lustreless ; under surface, legs, and prolegs green. When 

 examined through a lens the whole surface of the body is 

 seen to be covered with extremely minute white dots 

 (Stainton). Mr. S. Hudson of Epworth, Lincolnshire, who 

 appears to have been the first in this country to notice the 

 preparatory stages of this species, says in the Zoologist for 

 186 i, " the eggs are barrel-shaped and ribbed ; when first 

 laid they are of a beautiful green colour, but after a day or two 

 become marbled all over with brown. The larvae, when first 

 hatched, are of a dull flesh colour with five longitudinal reddish 

 brown stripes, two on each side and one down the back. When 

 a quarter of an inch in length, of a dull green colour, with the 

 five longitudinal stripes reddish brown." On Rlujnchoapora 

 alba (Beaked rush), feeding exposed on the narrow leaves and 

 lying lengthwise upon them when at rest. Mr. Buckler says 

 that it is very active, travelling much over the food plant. 



End of July till September, when it hybernates, ap- 

 parently at the base of the food plant close to the 

 ground ; after hybernation till the end of May. It has been 

 known to eat Erioplwrum (Cotton grass), but its ordinaiy 

 food in the north of England is evidently the Rhynclwspora. 

 In Scotland the insect, in its joaler varieties, is found where 

 no Rhiinchospora grows, and no observation seems to be 

 recorded of its actual food plant either there or in Ireland. 



