690 Mr. G. F. Leigh on Synepigonic series of 
condition found in inaria, It is a well-known but not very 
common variety, of which there are several examples in 
the Hope Department. Forty-one eggs were laid by this 
female, and the larvae hatched on January 9 and 10. 
They proved to be difficult to rear during the smaller 
stages, when the larvae were often buried in the moist 
forces produced by the extremely succulent food-plant. 
The surviving larvee were however quite healthy, and the 
imagines with few exceptions of the normal size. The 
results of the experiment are shown on preceding page 
in a tabular form. 
Comparison of the Individuals of the 1904 Synepigonic 
-Group of HYPOLIMNAS MISIppUS. By E. B. Poutton. 
Only a single female out of eight resembled the parent, 
and even this was a less-pronounced variety. Of the rest, 
four were typical misippus, three typical inaria—one of the 
latter indicating some slight approach in the direction of 
the parent. 
Thus a tendency is revealed which if general must lead 
to a gradual reduction in the numbers of the intermediate 
varieties, and an increasingly abrupt break between the 
misuppus and inaria forms of female. In this instance the 
intermediate variety had little power to impress its own 
form on the next generation; for seven out of eight of 
its female offspring broke up into the two well- known and 
sharply-separated forms. Although the transition between - 
misippus and inaria is far more complete than between 
its models chrysippus and dorippus (=klugii), i corre- 
spondence with the fact that a combination of mimetic 
forms must be younger than their models (Trans. Ent. Soe. 
Lond., 1902, pp. 482-4), the mimic has nevertheless made 
a considerable advance towards the abruptly-dimorphic 
condition of the Danaine butterfly which it resembles. 
It is unnecessary to describe the male offspring which 
were entirely normal in appearance, and as a rule in size. 
The largest and smallest specimens are represented on 
Plate XXXIL Figs. 7 and 8. ieee ee 
5 
