358 Mr. C. O. Raitardbnts Five Years’ Observations 
loved here on Moor Plantation. I feel sure they also 
are relations of Hewitsonia. Their larvae are of the same 
general hairy character and like the others run about in 
the vicinity of the ant-nest, over the bark of the tree. 
I am not yet certain what they feed on. I think it must 
be Algae or dead bark. They have no dorsal glands, 
and are disregarded by the ants though they run about 
in their tracks. I think it is an association of mutual 
respect. The Lycaenid larvae are protected passively, 
so to speak, by the ants. No other insects that would be 
likely to harm them will venture near them for fear of the 
ants. It is not a beneficial partnership (nor yet the 
reverse), for, as I say, the ants simply ignore them, seeming 
unable to attack them on tbe tree. 
Feb. 26, 1916.—The Iridopsis larva which I once saw 
was on the Hewitsonia-tree here [at Moor Plantation]. 
lve wondered uneasily several times whether I hadn’t 
misplaced the imago among the Lycaenids, for-the brown 
chitinous-looking pupa-case, distinct and separable from 
the cast skin which completely envelopes it, is very moth- 
like. Further the larva spins a fairly dense web of white 
silk to form a little cage in which I found the pupa in each 
case. It selects a fairly deep narrow crack or pit in the 
bark of the tree for the purpose, in a manner recalling 
the habit of some spiders. I feel sure I'll be able to get 
more on my return next tour—if the Huns do not get us 
going or coming by sea. The larva has a denser protection 
of hairs than the Hewitsonias, but shorter, and they are 
not quite so active. In shape they rather differ, and as 
to the process on the pro-legs which I saw in Hewitsonia 
and the honorius, 'm not sure in this case. 
Agege. 
Dec. 15, 1916.—On the way down here [Agege] I stayed 
two days at Olokemeji, the Forestry headquarters. On 
an Albizzia lebbek Benth., with quite a number of Jridopsis 
empty pupa-cases on it, there was a Crematogaster nest 
similar to the one seen at Agege (p. 354). 
[The following paragraph refers to a male Iridopsis 
incredibilis found about Dec. 7, 1916, on the bark of the 
Leguminous tree mentioned above. | 
Moor Plantation. 
Feb. 22, 1917.—The name of the tree—‘‘ Lebbek ”— 
is a corruption, I think, of an Egyptian name. It is not 
