LIFE HISTORIES OF CERTAIN BUTTERFLIES 91 
and dilated laterally. Two parallel rows of nine dorsal 
tubercles with a median row of seven ditto on abdominal 
segments. Not attached to food-plant. 
Head. — Heart-shaped, orange, covered with pale warts, 
two long spiny processes, each ending in three or four 
points. 
Segment 2. Two small dorsal and two lateral processes, 
hairy. 
„ 3. Ditto (two dorsal rows, one subdorsal, two 
subspiracular). 
„ 4. Ditto. 
„ 5-11. Ditto, one medial dorsal one in addition. 
„ 12-13. As 3, but no spiracular processes. 
Colour velvety black, a diffuse macular tawny spiracular 
band ; legs and claspers orange. Food-plant Portulaca. 
Life History . — 
1st moult, March 25, 1915, night \ 
2nd ,, March 28, 1915, morn 
3rd ,, March 30, 1915, night -12 days. 
4th „ April 1, 1915 
Spun up, April 4, 1915 J 
Pupated, April 5, 1915 
I subsequently watched a Dorippus chrysippus imitating 
$ oviposit ; she was very diligent, and walked about on the 
ground feeling for the food-plant with her proboscis. She 
invariably laid on the right plant. 
Papilio Angolanus 
Egg . — Of the usual papilionid shape, greenish white, laid 
on the upper surface of the leaves of young wild anana 
Egg laid, March 21, 1915 
Egg hatched, March 23, 1915 
Imago emerged, April 11, 1915 
Paeent Dori'p'pus imitating $ 
