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have inspected the monkeys in the Zoological Gardens with the 
following results. 
The divided lip which is in perfection in the Marsupalia 
and Rodentia, and in different degrees of retrogression in the 
Carnivora and the Lemuroidea* is unrepresented in the 
Catarhine monkeys—the lip being perceptibly plain; but it is 
represented in certain Platyrhine monkeys, notably in Cebus, 
by a furrow. In the specimens in the Zoological Gardens the 
furrow was very noticeable. There is a great facial likeness 
between Cebus and a baby—a slight elevation of the space 
between the nostrils being almost all that is required to 
complete the resemblance; for in babies the nose is sometimes 
as broad across the nostrils as it is long, and there is practically 
no bridge.] That such an elevation is in the normal process of 
development may be seen from the changes in shape of nose 
during a human individual’s life.t 
Further about Cebus is the shape of the ear—it is certainly 
the most like a human ear of any that I could see. Also in 
Darwin’s figure of Cebus vellerosus the hair grows from the 
front to Uhe back of the head—the same as in Man; and 
although I’have shewn that presumably in the ancestry of 
Man the hair was lost from the head for a time, yet when 
it re-appeared—being a reversion—it would probably assume the 
direction it possessed before. 
To my mind, Cebus is the nearest morphological equivalent 
to the ancestors of Man that has been found. It is beginning 
to be recognised in biology, although it has not yet had much 
effect on classification, that similar characteristics may be 
[*In the dog and cat it is in a half-joined condition—in the Lemuroidea 
the two side pieces are separated and partly joined to a depressed septum. ] 
[+In many specimens details of the nose and lip had been obscured in 
stuffing. | 
} The developmental changes necessary to convert the nose of Cebus into the 
nose of a baby are hardly more striking than the changes necessary to convert the 
obliquely truncate, broad nose of a baby into the elongate, narrow nose of an 
adult ; and the latter we know to be possible, as they occur during life in ourselves. 
Oo 
