WOOD-WHITE MARBLED WHITE. 95 



The caterpillar is green, striped on each side with, 

 yellow ; it feeds on the Bird's-foot Trefoil, and other 

 leguminous plants. 



The chrysalis is shown on Plate I. fig. 18, and in 

 shape somewhat approaches that of the Orange-tip. 



The butterfly appears in May and August, and though 

 by no means a common or generally distributed insect, 

 is found and sometimes abundantly in many locali- 

 ties throughout the country, as far north as Carlisle ; 

 some of these are here given. Woods in neighbour- 

 hood of Brighton, Horsham (Sussex), Dorchester, New 

 Forest, Exeter, Epping, West Wickham Wood, Monks- 

 wood, Huntingdonshire, Plymouth, Wavendon, Wor- 

 cester, Kent and Surrey, Teignmouth, Gloucestershire, 

 Carlisle, Lake District, Leicester, Manchester, North 

 Lancashire. Unknown in Scotland. 



THE MAEBLED WHITE BUTTERFLY. 

 (Arge Galaihea.) (Plate Y. fig. 3.) 



THIS highly interesting and elegant insect would, by 

 the uninitiated, probably be classed among the last 

 group of Butterflies the Whites from the similarity 

 in its colours; but from all those it may be readily 

 distinguished by having only four walking legs (instead 

 of the six which all our other white butterflies possess), 



