LEPIDOPTEROUS PUPPE AND THEIR SURROUNDING SURFACES. 
433 
III. October 12. A single pupa of P. brassicce was found shaded under the coping 
of some new yellow brickwork at Seaview, Isle of "Wight, in a somewhat shaded 
situation. It was a (1), ft, typical grey dusting, pale-greenish ground-colour ; normal 
black patches. 
At the same time and place a number of pupse of P. rapes were found, nearly all of 
which were shaded by the coping of the brickwork. When the comparison took 
place eight pupse were alive, and 
Of these.1 was (2), typical; yellowish. 
4 were (3), typical; faintly pinkish. 
3 ,, (4), all yellowish-pink ; 1 -with very small amount of pig¬ 
ment, the others with more than usual. 
These pupse also were well protected. The colour of the bricks was not sufficiently 
uniform or strong to be included under the yellow of the last series, and it was also 
complicated by the new whitish mortar and the new stone coping. 
IV. September 15. A number of pupae of P. rapes were compared at this date, 
having been chiefly obtained from larvae found upon mignonette in my garden at 
Oxford, while a few were produced from larvae taken from the same food-plant at 
Seaview. The larvae had been kept in two glass cylinders (about 8 4 centimetres in 
internal diameter and 1*8 decimetre iu height), the tops being covered with white 
muslin, somewhat dull and grey from age, while the cylinders stood upon white plates 
and were almost filled with abundant food-plant. 31 pupae were obtained, of which 
7 were fixed to tlie two muslin tops, and of 
these.1 was (1), pinkish. 
4 were (4), 2 yellowish-green, 1 pinkish, 1 greenish. 
2 „ (5) : both very pale yellowish-green, with a 
little pigment like that on (4) and in the 
usual positions. 
19 pupse were fixed to the glass of the two 
cylinders, and of these . . .... 2 were (1), 1 pinkish, 1 yellowish-green. 
6 ,, (2) and (3), for these had not been separated at 
this time, the classification being extended 
later: 3 were pinkish, and 3 yellowish- 
green. 
9 were (4) : 6 pinkish, 3 of them very faint and pale; 
2 greenish, and 1 yellowish-green. 
2 ,, (5), 1 very extreme and of a splendid emerald- 
green, with an almost complete absence 
of pigment in any form; the other pale 
yellowish - green, also with very little 
pigment. 
5 pupae were loose in the cylinders, and all 5 were (4), 1 pinkish and 4 greenish. 
These results, upon the whole, show well the effects of white and green surroundings 
in strong- illumination. 
© 
3 K 
MDCCCLXXXV1I.-B. 
