andy Sg Oe dette Se nal SNe Oral 
rede . ‘ 
the Relative Edibility of Insects. 27 
matic by colouring, yet are by habit. The weevil 
would seem to be protected by its extreme hardness: 
the Longicorn (also found to be very hard) apparently 
by its bristles. The very unusual shape of the Longi- 
cornraises the question whether it may not be influenced 
by the abundant 74. See “Essays on Evolution,” 
pp. 369, 370.) 
Obs. 148. Sp.——Lastly, I gave M. an Acridian. 
He seemed nearly “ full,” for though it was a species 
which he eats readily as a rule, he was not very eager 
for this one. 
Serves V. Obs. 149-153. Jan. 4. 
Series W. Obs. 154-155. Jan. 4. 
Series X. Obs. 156-175. Jan. 4.—At 4.30 p.m. I took 
M. out hunting. He had had plenty of vegetable food 
in the afternoon, but no insects. 
Obs. 156. Sp. 6.—Meloid: on the first bush were 
several of the beetle Coryna dorsalis. I induced M. 
to put out a hand and touch one, but he would not 
even smell it. 
Obs. 157. Sp. 42.—Coreid, Anoplocnemis curvipes : 
M. saw this bug, caught it, and ate it very quickly, 
as if afraid of being pricked. 
Obs. 158. Sp.—-—He chased and ate a small 
Acridian, then ate some grass. 
Obs. 159. Sp. 78.—An Aretiid caterpillar, about 
an inch long, was touched and left. 
Obs. 160. Sp. 16.—Acridiid, Phymateus viridipes : 
a pair of these aposematic grasshoppers were in copula 
freely exposed on short grass in the open. M. went up 
to them and pawed the male. Without attempting 
to get away the grasshopper merely erected its wings 
perpendicularly so as to display their purplish and 
black colours. M. took no more notice and ate some 
grass. Afterwards he ate other insects, including 
a large Cyrtacanthacris grasshopper. 
(Note——This exemplifies excellently the instinct of 
an aposematic insect to make the most of its colours 
without attempting to escape. Had it done so, the 
monkey might well have pounced on it and maimed 
it, even though he would not eat it afterwards. The 
coloured wings are extremely conspicuous when the 
insect is on the wing, its flight being slow and laborious, 
and direct one’s attention very emphatically to it.) 
