Relationship between certain West African Insects. 491 
P. aurivillii kasaiensis; the imago emerged Jan. 7: 
31 3 min. and 1 § maj. were collected from the nest. 
“ Jan. 15, 1912. The small black house-ants, P. rotundata, 
var., covered up the pupa as it lay on my table with 
particles of wood, wool and other rubbish, including the 
egg-shells of a Saturnian moth and the shed caudal horn 
of a Sphinx larva.” 
“ Jan. 15, 1912. With a view to attracting more ants 
I left a lump of sugar on the table and an attempt to cover 
this also was made. These ants liked the sugar very much, 
but they are also carnivorous and had devoured a small 
green Mantis which I had left on the table dead. 
“T found a small box containing tiny red house-ants and 
their larvae which I placed on a table where the small black 
house-ants (P. rotundata, var.) come. The latter soon 
vanquished the former and carried them off with their 
larvae.” 
No. 596, 9. The larva was found on Jan. 2, 1912, in Oni 
Clearing in a head of Costus afer. The butterfly emerged 
on Jan. 15, about 7 a.m.; 7 $ min. and 2 $ maj. of Pheidole 
rotundata were collected Jan. 2, from the nest covering the 
head of the plant. 
No. 597, 3. The pupa was found in Oni Clearing in a 
head of Costus afer on Jan. 14, 1912, and the imago emerged 
on Jan. 15 about 7 a.m.; 13 P. aurivillii kasaiensis were 
collected Jan. 14 from the nest covering the head of plant. 
C.—CARNIVOROUS MOTH-LARVAE AND MOTH- 
LARVAE ASSOCIATED WITH ANTS. 
1. Eublemma ochrochroa, Hampson (Erastrianae). 
These little Noctuid moths were compared in the British 
Museum with the type of the species, from Sierra Leone. 
No. 776. The larva of this moth was found near Oni 
Clearing on Mar. 29, 1912, and a note dated May 13 thus 
refers to it :— 
“The larva was very remarkable. I discovered a stem 
of Triumfetta cordifolia bearing Coccids, Stictococcus 
sjdstedti, on the secretions of which Oecophylla ants were 
feeding. Among the Coccids was a small brown oval 
structure, apparently of silk, fixed to the bark. I took it 
to be a cocoon and so brought it home, but by and by the 
structure moved with considerable rapidity, and I then 
