20 SMALL WHITE. 



The expanse of the wings varies from one inch and three quarters 

 to nearly two inches and a half; a singularly small one, captured some 

 years since, by my brother, Frederick Philipse Morris, Esq., is figured 

 in the plate. The colour of this insect is milk-white; the fore wings 

 have a dusky or black mark, irregularly defined at the tip, extending 

 along part of the margin; and there is a black spot near the middle 

 of the wing, and a second indistinctly visible. The hind wings have 

 a dull dusky black mark in a line with them, about the middle of the 

 fore edge. Underneath, the mark at the tip shews through, of a pale 

 yellowish colour, and there are two black spots near the centre ; in 

 fact the same as those, one of which only is apf)arently visible, on the 

 upper surface. The hind wings are yellowish, thickly irrorated, 

 principally near the base, with minute dots. 



The female has two black spots near the centre of the upper 

 side of the fore wings, and in many instances an elongated patch of 

 dusky black on the lower margin. There is a dull black mark 

 toward the centre of the fore margin of the hind wings, in a line 

 with the two on the upper wings. Sometimes the whole upper 

 surface is of a pale bufi" or yellowish colour. 



The eggs are placed singly. 



The caterpillar is pale green, with a narrow line of orange yellow 

 along the back, and an interrupted line of yellow on the lower part 

 of each side. The head, feet, and tail are entirely green. The body 

 is slightly striated across with the segments. 



This is a most variable insect, especially in the size of the spots 

 on the upper wings ; in some, in fact, they are wholly obliterated, 

 and in others they are very large. I have a whole row in my cabinet, 

 no two of which are exactly alike. 



The figures are taken from some of them — one the singularly small 

 one already spoken of. 



J. C. Dale, Esq. has two which seem intermediate between this and 

 the following species. 



