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LEMURS. 
spines, which project from the upper surfaces of their joints, are so elongated that 
they actually project beyond the general level of the skin of the back of the neck, 
where they form a series of little humps. We are at present unacquainted with 
the object of this peculiar structural arrangement. 
Like the loris, the potto is nocturnal in its habits, sleeping during the whole 
of the day, as shown in our first illustration, rolled up in a ball, with the head 
between the fore-legs, and folded into the chest, and supporting itself, in captivity 
by grasping the bars of its cage with both hands and feet. 
The potto is found over a considerable extent of the West Coast of Africa, 
having been recorded from Guinea, Sierra Leone, and the Gabun. Unfortunately, 
however, we have but few details as to its habits in a wild state, this being prob- 
bosman’s potto. (From Proc. Zoul. Soc. — After Sclater.) 
ably largely due to the creature having been seldom seen by Europeans. Several 
specimens of the potto have been exhibited in the Gardens of the London Zoological 
Society; the animal is, however, extremely susceptible to cold, and requires the 
greatest care. 
The Awantibo (Perodicticus calabarensis). 
Far more rare than the potto is the lemur represented in the illustration on 
the next page, which is known only from the regions around the Old Calabar River, 
flowing into the Bight of Biafra, east of the Niger. The awantibo is distinguished 
from the potto, not only by its smaller size and more slender build, but also by the 
tail being reduced to a mere rudiment, and by a still further reduction of the index 
Anger, which is represented merely by a little tubercle on the edge of the hand. 
