236 
MODEltX SYSTEM. 
Sp. I. Gon. Rhamni. Wings of the male yellow, of the female whitish ", 
with a fulvous spot on each. 
Inhabits woods in the spring and autumn. Flight slow. 
Genus 313. COLIAS. Pabr., Lair., Leach. Papilio. Limit) 
Haworth. Pieris. Sckrank. 
Antenna short, gradually thickening into an obconic head : palpi much 
compressed ; the last joint very short : feet alike in both sexes, all 
with bifid or unidentate nails : wings anterior, somewhat trigonate ; 
hinder rounded, with a groove to receive the abdomen: chrysalis 
angulated, fastened by a transverse thread. 
Sp. 1. Col. Ilyale (clouded yellow butterfly). 
Inhabits Europe. Occurs in England once in three years, some sea- 
sons only locally, at others in the greatest profusion in every part of 
the country. There is a pale coloured variety of each sex, which 
have been considered as distinct species, 
Sp. 2. Col. Edusa. 
Genus 314. PONTIA. Fabr., Leach. Fieris. Sckrank, Latr. 
Antenna elongate, with an abrupt, obconic, compressed head : palpi 
slender, somewhat eylindric ; the last joint as long as the preceding : 
wings not very narrow, or much lengthened ; hinder ones grooved 
to admit the abdomen, but not tailed : feet alike in both sexes; 
claws unidentate or bifid : chrysalis angulated, fastened by a trans- 
verse thread, 
<! * Anterior wings somewhat trigonate; hinder ones somewhat orbka- 
late.” 
Sp. 1. Pant. Cratagi (black-veined white). Wings white, with a taint 
tinge of yellowish and black ncrvures. 
Inhabits Europe. In England it is found in the woods near London ; 
the larva feeds on the white-thorn. 
Sp. 2. Pont. Brassica (large cabbage butterfly). 
Inhabits Europe; the larva on the cabbage. 
Sp. 3. Pont. Rapa (small cabbage butterfly), 
Inhabits gardens. 
Sp. 4. Punt. Napi (green-veined white). 
Inhabits gardens and woeds, 
Sp. 5. Pont. Cardamines (orange tip butterfly). 
Inhabits path-way!; in woods. 
Sp. 6. Pont. Vaplidicc (Bath while). This has long been doubted 
whether a native of this country; but that successful and indus- 
trious entomologist Mr. Stephens has sufficiently proved the tai't, 
by taking a specimen at Dover in July 1813. 
