The Making of Species 
that the pattern changes, and the direction of the 
lines, or spots, at the head, neck, and every joint 
of the limbs; and, lastly, that the tips of the ears, 
nose, tail, and feet, and the eyes are emphasised 
in colour.” 
More recently Mr J. Lewis Bonhote has 
devoted much attention to this important subject. 
The results of his researches are summarised on 
page 185 of vol. xxix. of the Proceedings of the 
Linnean Soczety, and on page 258 of the Proceea- 
ings of the Fourth International Ornithological 
Congress, 1905. Mr Bonhote states that the 
presence or absence of colour tends almost in- 
variably to make its appearance, first of all, on 
certain definite tracts, common to mammals and 
birds alike, which he calls Aeczlomeres. 
‘‘Poecilomeres,” he writes, ‘‘are situated on 
the following parts, viz., chin, malar stripe, max- 
illary stripe, a spot above and slightly in front of 
the eye, a spot below or slightly behind the eye, 
the ear, crown of the head, occiput, fore-end of 
sternum, vent, rump, thighs, wrist, shoulders 
(above and below). 
‘Now, there is hardly any species of bird on 
which one or more of these pcecilomeres is not 
‘picked out’ (to use a painter’s expression) in 
some colour different from that of the surround- 
ing parts, and, in fact, most of the so-called 
recognition or protective markings will be found 
on these patches. 
288 
