404 Mr. C. O. Pardiliteon's Five Years’ Observations 
to have had more. They seemed to me as I watched them 
in passing through the districts where I saw them, to show 
under-surface variation recalling that of Hamanumida 
daedalus very markedly. Perhaps this feature of this 
particular species is well known to you, but I am not sure 
whether I have heard Dr. Lamborn mention them. 
C, Tue Migration or LinytHEA LABDACA WESTW., 
AT Moor PLANTATION. 
[For further observations on the migration of this butter- 
fly in W. Africa see Proc. Ent. Soc. Lond., 1916, p. iv; 
for that of ZL. lavus Trim., in B.K. Africa, ibid., 1912, Pp 
xevu; 1921, Swynnerton, Pp. Ixi; and of L. bachmanni 
Kirtland, in Texas, Ent. News, Oct., 1917, and E.M.M., 1918, 
p. 16. I wrote to Farquharson about the inconsistency in 
the direction of flight in his letter of May 3, 1917, but 
this was one of the subjects he had left to discuss during 
his leave. Fortunately, however, his letter to Dr. Hill 
leaves no doubt about the interpretation. 
March 20, 1915.—It has been dry since I came out till 
within a few days ago. 
To-day the migration of the Libytheas has been in progress 
for more than two hours now. A constant stream of them 
has been flying across the station in a 8.8. Westerly direc- 
tion. I have now seen this migration three times, and 
each time it has been in the same direction. I am not 
sure if the seasons have corresponded, but I rather think 
that is so. The particular species is not very common 
here ordinarily, if anything they are uncommon. I have 
only seen them a common species in one place, at Aro- 
Chuku in the Cross River district, near Itu, which is N. 
from Calabar. 
May 3, 1917.—The northward [southward] flight of the 
Libytheines took place yesterday and the day before. In 
some places the natives take the appearance of the migrants 
as a sign that the planting season for such crops as maize 
and other annuals has begun, which is equivalent to saying 
that the rains have definitely set in. They go southwards 
[northward] again at the end of the season. This year 
the flight is late, for I recall that when I laid down the 
ground-nut experiment which led to the discovery of the 
Mylabrids, about mid-April, the flight was then in progress. 
It is curious that these inconspicuous almost cryptic 
