410 Mr. L. Guppy, Junr., on the Life History of Cydimon. 
savanna or open field, as they fly low down and all in one 
direction, and somewhat leisurely, until alarmed, it is 
possible by standing up quietly, as each one comes within 
reach of the net, by a rapid swoop, to catch and kill them 
as fast as possible. 
They do not fly in flocks, but singly, and rise over all 
obstacles, generally in an easterly direction, and vice versa. 
In October only solitary specimens are seen here and 
there. I found three eggs in the latter part of October 
1901, which gave me the same number of imagines early 
in December 1901. 
Since 1901 these moths have not been plentiful. I 
have seen single specimens here and there, and this may 
be the case for a few years to come, when quite un- 
expectedly they will again invade us in immense numbers. 
Mr. J. H. Hart, F.L.S., was kind enough to identify the 
creeper on which they feed—Omphalea megacarpa, Hemsley. 
I regret not having been able to obtain any more larve 
since 1901, as I shall be anxious to continue observations, 
especially in regard to the reasons for such a variety in the 
ground colour of the larvee, ete. 
[A very brief description of the early stages of Urania leilus, 
communicated by Herr Kappler, was published by Dr. E. Hoffman 
in Stett. Ent. Zeit. xli, p. 487 (1881). The larva of the Mada- 
gascan Urania rhipheus has been described by Camboné, Report 
Int. Congress of Zoology, 1892, II, p. 180.] 
EXPLANATION OF PLATES XXVI, XXVII. 
[See Explanation facing the PLATEs.] 
