WHITE CABBAGE BUTTERFLIES. 25 
veined’ White) are that they are smaller than those of the ‘“ Large 
White.’ They are only from just about over an inch (in the case of 
the rape, the ‘Small White’’) up to, sometimes, about an inch and 
a sixth in length (with the ‘‘Green-veined White’’), and are velvety 
in texture, of some shade of greenish in colour, and speckled or dotted 
black, but without the great black blotches of the brassicae, or ‘* Large 
White”; and in the case of the rapa, the whole skin set with small 
black dots down to the legs. 
The chrysalids are suspended very similarly to those of the ‘‘ Large 
White”; those of the ‘Small White” are stated to vary much in 
eround colour,—as of various shades of drab, with more or less 
spotting of black, also of rosy pink, or, again, of a dull green. The 
chief varieties of the ‘‘Green-veined White’’ are stated to be of a light 
tender green, or a very pale pink buff.* 
The ‘Small White” butterflies are chiefly distinguishable to 
general observers from the ‘‘ Large” species by their smaller size, but 
Prerts Napi.—l, butterfly; 2, egg; 3, caterpillar ; 4, chrysalis. 
the ‘‘ Green-veined White” (see figure) may easily be known by the 
broad greenish margins to the veins beneath the hinder wings. 
On June 25th Mr. Thos. M. Henry, writing from Ballyskeagh, 
Dunmurry, near Belfast, Ireland, sent me an enquiry regarding a 
caterpillar attack, which, he noted, ‘“‘is destroying my Turnips after 
they are singled or thinned out.” 
In this instance the caterpillar proved to be a very characteristic 
example of that of P. napi (the ‘‘Green-veined White’’). The paler 
colour of the green below the larva and the white hairs showed 
excellently, as also the yellow rings round the spiracles. The cater- 
pillar had passed its thread-belt round it to support it for its coming 
change to chrysalis; and the great strength of the thread was very 
* For excellently minute account of larve of the above-named species, from 
which I quote some portions, see the elaborate record of observations in ‘ Larve 
of British Butterflies and Moths,’ by W. Buckler, vol. i. ‘‘The Butterflies,” 
pp. 148-159. 
