38 PERODICTICUS 



GENUS 4. PERODICTICUS. POTTOS. 



T 2—2 ^ 1—1 n 3—3 ., 3—3 , 



1.3=3; C. Jin; P. 23T,; M. 1^=3 = 36. 



PERODICTICUS Bennett, Proc. Zool. Soc. Lond., 1831, p. 109. Type 



Perodicticus geoffroyi Bennett = Nycticebus potto Geoffrey. 

 ' Potto Less., Spec. Mamm., 1840, pp. 207, 237. 



Tail very short, distinct ; hands and feet large ; fingers and toes 

 free at ends ; index finger rudimentary without a nail, apices of verte- 

 brae, except of neck, projecting beyond skin. Only one ridge on 

 plane of ear; anterior upper molar with oblique ridges and four cusps ; 

 the posterior molar with two cusps ; last lower molar with four cusps ; 

 lower incisors prominent, projecting. 



LITERATURE OF THE SPECIES. 



1812. E. Geoffroy Saint-Hilaire, in Annales du Museum d'Histoire 



Naturelle, Paris. 



The "Potto" of Bosman is here named Nycticebus potto. 

 1831. Bennett, in Proceedings of the Zoological Society of London. 



The genus Perodicticus is here instituted, and Nycticebus 



POTTO Geoffroy renamed P. geoffroyi. 

 1840. Lesson, Species des Mammiferes Binianes et Quadrumanes. 



Perodicticus potto is here renamed Potto bosmani. 

 1879. Bouvier, Guide du Naturaliste. 



Perodicticus edwardsi first described. 

 1902. De Winton, in Annals and Magazine of Natural History. 



Perodicticus edwardsi is renamed P. batesi. 

 1910. 0. Thomas, in Proceedings of the Zoological Society of 



London. 



Perodicticus ibeanus, and P. ju-ju first described. 

 1910. O. Thomas, in Annals and Magazine of Natural History. 



Perodicticus faustus first described. 



GEOGRAPHICAL DISTRIBUTION OF THE SPECIES. 



The range of the members of this genus is not yet definitely 

 known, as but one species has been familiar to IMammalogists for any 



