126 POPULAR ENTOMOLOGY. 



brownish-grey, the base being blue, and the markings 

 nearly similar to P. Corydon, which appears in July. The 

 female is brown above, glossed with blue, with a small black 

 spot on the primary wing, and on the secondary pair a light 

 streak with ocellated spots. 



LEPIDOPTERA. PAPILIONID.E. 

 LEUCOPHASIA. 



Generic Distinctions. Antenna, club abrupt and compressed ; 

 palpi short and flat, the basal joint large and cone-shaped, the 

 second short and four-sided, the third minute and almost globu- 

 lar ; wings very narrow and oval. 



LEUCOPHASIA SINAPIS. (Plate VI.) Wood White. This 

 is the smallest of our white Butterflies, and has somewhat 

 the appearance of a Dragon Fly ; the colour milk-white ; the 

 base of the wings dusky, and a large brown spot on the 

 anterior pair at the tip ; the under side is faintly tinged 

 with yellowish-green. The caterpillar is green, with a line 

 of bright yellow on each side. It feeds on the Ornithopus 

 perpusillus (bird's foot trefoil) and Lathy r us pratensis 

 (meadow vetchling) . The insect is rather rare ; I took only 

 one specimen in Sussex. 



