on the Bionomics of Southern Nigerian Insects. 365 
g 
Cremastogasters off the ant-tree. But the two are safe, 
and if an Ichneumon comes out I'll be very angry indeed. 
I went back yesterday evening, and, as the place is rather 
shady and it was getting dusk, I failed to notice that the 
ground was simply alive with black drivers before I had 
quite half a dozen biting like fury under my nether 
garments and a lot more running up the outside. It was 
lucky I got the pupae in the morning or they’d have been 
eaten up that might. There’s nothing succeeds lke 
success, and I went there this evening and got another 
“gall” larva. I was actually expecting to find the larva 
of the other, and I may do so before long. 
July 29, 1915.—The pupa of A. alcibiades, though not 
striking, is in a general way, in its “ pose,” rather like the 
gall one [A. maesa]. 
Sept. 28, 1915.—The alcibiades larvae do not feed on 
beans. They come down the ant-tree—Dr. Lamborn’s 
“* Hewitsonia-tree,’ a species of Alstonia [congensis], 
haunted by Cremastogaster ants—just as maesa does. 
They have, I think, a Guenée gland. [ve got one in 
spirit. They have no tubercles. 
Feb. 22, 1917.—I think I have two new Argiolaus pupae 
[A. wulus of which a g, emerging Feb. 25, 1917, was 
received]. One has just emerged, but it is too soft to 
kill as yet. I think the Argiolaus lives on a Loranthus 
parasitic on the same tree as the Hewitsonias, but I think 
its food may be a scale on the Loranthus. [This paragraph 
may have been written a few days later than the beginning 
of the letter. | 
Feb. 27, 1917.— Before reaching it [the Pterocarpus, p. 382] 
Thad to pass a tree where Hewitsonia pupae are at times to 
be found, and soon found three. For a special reason I 
examined one or two small shrubs of the undergrowth 
for other Lycaenid pupae, the special reason being the 
presence on the large Hewitsonia-tree (I do not know 
the species [Alstonia congensis], but believe it to belong 
to the family Apocynaceae), of two or three large Loranthus 
parasites, which I now believe to be the special habitat 
of the two species of Argiolaus [A. alcibiades and maesa| 
which I sent last tour and of the other sent last mail 
[A. clus]. The larvae (not invariably but frequently) 
leave the ant-infested Loranthus to pupate, often travelling 
a long distance—60 ft. at least in some cases—to pass the 
critical, because vulnerable, stage between the larval and 
TRANS. ENT. SOC. LOND. 1921.—PARTS III, IV. (JAN.’22.) BB 
