28 ALLEN'S NATURALIST'S LIBRARY. 



longer than the fore-limbs ; hands smaller than the feet ; thumb 

 thick, with a tubercle at base; the wrist-bone of the very 

 rudimentary index-finger supporting two rudimentary finger- 

 bones ; third finger not parallel to fourth and fifth : the fourth 

 longest (Fig. 7). Great toe with a tubercle at its base, oppos- 

 able. Tail ^ inch long, hidden in the fur of the body. 



Fur grey at base of hairs, fawn-coloured farther up, and 

 tipped with dark brown, uniform over the body and limbs ; face 

 darker ; sides of head lighter ; line from brow down the nose 

 white. No vibrissae on face and no eyebrows ; chin, throat, 

 inner surface of limbs, and under side of body, greyish- white. 



Posterior upper molar nearly equal to posterior pre-molar, 

 with the hind inner cusp of the crown rudimentary. Lower in- 

 cisors not visible beyond the lip, cingulate ; posterior molar 

 five-cusped and relatively larger than in the next species (P. 

 potto). Bony palate with large perforations behind the incisors. 

 Intestines, 40 inches long ; caecum, 2^ inches. 



Distribution. The " Angwantibo," as this species is called, is 

 known only from Old Calabar, on the west coast of Africa. 



n. BOSNIAN'S POTTO. PERODICTICUS POTTO. 

 Potto, Bosnian, Beschrijving van de Guinese Goudkust, ii., p. 32, 



fig- 4 (1704)- 

 Nycticebus potto, Geoffr, Ann. Mus., xix., p. 165 (1812)- 



Schlegel, Mus. Pays Bas vii., p. 287 (1876). 

 Perodicticus geoffroyi, Bennett, P. Z. S., 1830, p. 109. 

 Pcrodicticus potto, V. der Hoeven, Tijdschr. v. Natuurl. Gesch., 



xi., p. 41 (1844); Wagner, in Schreber's Saugeth. Suppl., 



v, p. 183 (1855). 



Stenops potto, Pel, Bijdragen tot de Dierkunde, 1852, p. 41. 

 Characters More common than the Angwantibo and dis- 



