662 Dr. G. D. Hale Carpenter on the inheritance of 
Finally the hippocodn form of the Southern race of 
dardanus is represented in the Hope. Department by 12 
specimens from the neighbourhood of Durban caught or 
bred by G. F. Leigh; one from Malvern, Natal, by G. A. K. 
Marshall; one from Cape Colony near King Williamstown, 
by J. P. M. Weale. 
It must be remembered that the hippocodn of the S.E. 
coast has the main white areas on fore- and hind-wings 
larger than in the West Coast forms, corresponding to the 
dominicanus, Trim., form of its model Amauris niavius in 
EK. Africa. Unfortunately, owing to the mixed character 
of the offspring from a parent in Durban, the number of 
hippocoodn females in any family is small. The figures are 
as follows: From a hippocodn parent, whose spot-cell 
ratio was 68°3 %, there were three hippocodn forms, the 
figures for which were 60%, 56°7%, 472%. From a 
trophonius, Westw., parent there were only two hippocodn 
offspring, whose figures were 52°9°% and 545%. From 
a cenea, Stoll, parent two hippocoon offspring, 58°6 % and 
64:5 %. 
Since writing the above I have had an opportunity, 
through the kindness of Mr. Roland Trimen, F.R.S., of 
measuring the spot in five specimens in his private collection 
—3 from Natal and 2 from Cape Colony. These 19 Southern 
specimens range from 47:2 % to 775%, with an average 
ratio of spot to cell of 61°2%. It will be seen that the 
comparison of the average size of the West African spot 
with that of the Southern and Eastern form suggests a 
point of considerable importance to the argument developed 
in this paper. The heppocodn of Natal, which mimics 
Amauris mavius dominicanus, has the important white 
areas of the wings larger than in the hippocodn of the West 
Coast, mimicking Amauris niavius in which the white areas 
are also smaller than in the Eastern model. But the intra- 
cellular white spot, which is not of so much importance 
for the mimetic likeness, is, on the average, actually smaller 
in the Natal and Cape Colony forms than in the West 
Coast forms. 
The above-described relationship disposes of an argument 
which might be stated against the conclusion here drawn 
(that the large size of the spot in hippocodn derived from 
planemoides is due to the hereditary influence of this small 
feature), namely the objection that the size of the spot 
in the hippocoén offspring is not due to a separate factor, 
