230 THE BRITISH NATURE BOOK 



Eggs Greenish white ; ribbed and serrated. May or June. 

 Locality Fairly common in wood clearings. 



25. Small Pearl-bordered Fritillary (Argynnis silene). Like above, but 

 darker, and many more pearly or silvery spots. 



Food plant Dog-violet. 



Larva Dark velvet, with pink tinge ; spiny, the first pair long, like horns ; 

 pink stripe close to feet. 



Pupa Brown marked with black ; special black V mark on thorax ; silver 

 spots ; head downwards. 



Eggs Green, changing yellow, grey, blackish ; ribbed and reticulated. 

 June to July. 



Locality As above, but more local. 



26. The Heath Fritillary (Melitaa athalia) sometimes called " PEARL- 

 BORDERED LIKENESS." Darker markings than above. 



Food plant Cow wheat (sometimes foxglove). 



Larva Black back ; rich brown on sides ; dotted white ; orange spines. 

 Pupa Pale brown, with black and orange markings ; head downwards. 

 Eggs Ribbed ; green, becoming grey ; in clusters. June and July. 

 Locality Scarce : Essex, Kent, Surrey, Devonshire. 



27. Glanville Fritillary (Melitcea cinxia). Recognized by under side. 

 Hind-wings pale yellow, crossed by two irregular orange bands. Pale yellow 

 up to fore-wings (under side), dotted with black. 



Food plant Plantain, especially " narrow-leaved." 



Larva Black, white dots ; red head and fore-legs ; hairy tufts. 



Pupa Brown and orange. 



Eggs White, tinged yellow or green ; clusters ; ribbed, broad base. June. 



Locality Isle of Wight. 



28. Marsh Fritillary (Melitcea aurinia). Varies much in size and colouring, 

 but identified by row of spots with black centres towards edge of hind-wing, 

 under side. 



Food plant Devil's-bit scabious ; also honeysuckle. 

 Larva Black, spiny, tiny white dots ; under side dull reddish colour. 

 Pupa Pale brown, black and orange ornamentation : head downwards. 

 Eggs Light brown, shiny ; smooth base, ribbed upper half ; clusters. 

 May to June. 



Locality Water meadows ; widely but locally distributed. 



Family : Nymphalida. Genus : Danaina. 



29. Milkweed Butterfly (Anosia plexippus) otherwise called " MONARCH." 

 Very rare ; immigrant. 



Family : Nymphalidce. Genus : Satyrina. 



30. The Marbled White (Melanargia galatea). Easily identified. 

 Food plant Grasses. 



