THE POTTOS. 27 
molars have their crowns four-cusped and are nearly equal in 
length; the crown of the posterior molar is 4-5-cusped, and has 
a ridge joiningyits anterior heel to its front outer cusp. ‘Trans- 
verse and oblique ridges are well marked on the crowns of 
both the upper and lower cheek-teeth. 
i. THE CALABAR POTTO. PERODICTICUS CALABARENSIS. 
Perodicticus calabarensis, Smith, Proc. Roy. Phys. Soc., Edinb., 
TH60; ab ypox Hoss I, 2- 
mirioccaus calavareusis, |). BK. Gray, P. Z.-S., 1863, p: 1560; 
Eiuxiey EZ. 3., Pp. 314, pl..28 (1862). 
Nycticebus calabarensis, Schlegel, Mus. Pays Bas, vii, p. 287 
(1876). 
Characters.— Hair long, wool-like ; face, hands, and feet thinly 

Fig. 7. Hand and Foot of P. calabarens?s (after Huxley, P. Z.S., 
1864, p. 319). 
haired. Head 2% inches long, tapering in front ; muzzle pro- 
minent and blunt; ears large, pointed, and projecting above 
the level of the head, with short hairs, two lamellz inside, 
and marginal tufts ; neck short ; hind-limbs slightly larger and 
