21 



GREEN VEINED. 



PLATE IX. 



Pontia napi, Fabricius. Ochsenheimer. Curtis. 



" " Stephens. Duncan. 



Papilio 7iapi, Linn^us. Lewin. Donovan. 



" " Albin. Wilkes. 



Pieris napi, Schrank. Latreille. 



" " Boisduval. Zetterstedt. 



Ganoris napi, Dalman. 



Catophaga napi, Hubner. 



Comparatively plain as this insect is, yet, looking at it, as at all 

 others, with the eyes that the entomologist does, he •will always say 

 "Who can paint like nature.'" 



The Green-veined White is another of our most common native 

 species. It occurs about the middle of May, and also in July, and is 

 found in all situations — gardens, woods, lanes, and fields. 



The caterpillar feeds on different species of Brassica, Reseda 

 Raphanus, and other plants. 



This species varies greatly in size, some being only about an inch 

 and a half in width, and others as much as two. A very small one, 

 captured I believe by myself some years since, and figured in the 

 plate, is only an inch and a quarter across the wings. 



The wings are white, dusky black at the tips and the basej and 

 there is generally a black sjiot not far from the outside edge of the 

 fore wings. Some however have no spot whatever, or the very faintest 

 indication of one, which is more visible if held up against the light. 

 There are some small irregularly-shaped triangular marks at the end 

 of the nerves at the outside edge of the wing: the hind wings are 

 white. Underneath, the fore wings have two spots, as in the female 

 on the upper surface, and the nerves obscure black. The hind wings 

 are pale yellowish, with the nerves broadly margined on each side 

 with dusky greenish, widest on the inner part, and tapering off after- 

 wards to the edge. 



