150 DR. J. E. GRAY ON THE SPECIES OF LEMUROIDS. [April 21, 



2. Nycticebus javanicus, Geoff. 1812; V. d. Hoeven, Nat. 

 •Tijdschr. viii. p. 345, t. 6. f. I, 2, 3, t. 7. f. 5-7. B.M. 



Hub. Java. 



14. LoRis. 



Prosimia, Cuv. & Geoff. 1798. 

 Stenops (part), Illiger. 

 Arachnocebus, Lesson, 1840. 



Head small ; nose conical ; ears thin, produced. Body and limbs 

 elongate, slender. 



LoRis GRACILIS, Linn. B.M. 



Loris, Buffon, xiii. t. 30. 



Loris eei/lonicus, G. Fischer. 



Ilab. Ceylon. India : Pondicherry. 



Skull and skeleton in British Museum. 



•ff The hand broad; the index finger abortive, cfawless -^ eyes mode- 

 rate. Perodieticiiia. 



15. Perodicticus, Bennett. 



Tail shorter than the body. The hands and feet large. Fingers 

 and toes free at the ends ; the index finger rudimentary, but distinct. 

 Lower cutting teeth large and prominent, and projecting. The apices 

 of the vertebrae of the back, neck, and withers projecting beyond 

 the s'vin, like prickles. 



Perodicticus potto. B.M. 



Perodicticus geoff'royi, Bennett, P. Z. S. 1830, p. 109 ; Murray, 

 Proc. Roy. Phys. Soc. Edinb. 18G0, p. 191. fig. of hand and feet. 

 Potto bosmani, Lesson. 

 Hab. Sierra Leone ; West Africa. 

 Skull and skeleton in British Museum. 



IG. Arctocebus. 



Tail very short. Hands and feet small, with the lower phalanges 

 (not including the thumb) united in the skin, the two upper joints 

 free ; the index fingej abortive, reduced to a tubercle. Lower cut- 

 ting teeth small, hyaline, hidden by the lips. 



Arctocebus calabarensis. 



Perodicticus calabarensis. Smith, Proc. Roy. Phys. Soc. Edinb. 

 1860, p. 172. f. I, 2 (hands), f. 3, 4 (head). 

 Hab. West Africa ; Old Calabar. 



Fam. n. Tarsid^. 



Cutting teeth ^, erect, cylindrical, conical ; the two upper front 

 elongate, acute ; the lower ascending obliquely, crowded between the 

 canines ; grinders ~^. The fingers and toes free, well developed ; 



