NYCTICEBUS 29 



Nycticebus natun^. Stone and Rehn. 



Nycticebus coucang natuna Stone and Rehn, Proc. Acad. Nat. 



Scien. Phila., 1902, p. 140. 

 Nycticebus tardigradus Thos. and Hart., Novit. Zool., I, 1894, p. 



655 ; Miller, Proc. Wash. Acad. Scien., Ill, 1901, p. 138. 

 Nycticebus natutice Lyon, Proc. U. S. Nat. Mus., 1906, p. 534. 



NATUNA ISLANDS SLOW LORIS. 



Type locality. Bungaran, Natuna Islands. Type in United States 

 National Museum. 



Geogr. Distr. Natuna Islands. 



Genl. Char. Distinct in coloration from all known forms. No 

 sagittal crest, incisors four. 



Color. Upper parts rich russet brown, deepest on the shoulders ; 

 limbs paler. Dorsal line rich Vandyke brown becoming black on back 

 and decreasing in width posteriorly, becoming almost obsolete on the 

 rump; tips of hairs on each side of dorsal line silver white; crown 

 patch broad extending to ears, burnt umber, with a broad bar of same 

 color to orbital rings which are black; cheeks suffused with dusky 

 brown. Lower portion of arms lighter than the other parts. Throat 

 silvery white, rest of under parts pale cinnamon; hands and feet 

 dusky. Ex type United States National Museum. 



Measurements. Total length, 318; tail, 13. Skull: total length, 

 58.5 ; occipito-nasal length, 56.9 ; Hensel, 47.5 ; zygomatic width, 39.8 ; 

 intertemporal width, 17.9; palatal length, 18.4; median length of nasals, 

 13.9; length of upper molar series, 16; length of mandible, 14.9; length 

 of lower molar series, 14.4. Ex type United States National Museum. 



Nycticebus malaianus (Anderson) . 



Nycticebus tardigradus malaianus Anders., Cat. Mamm. Ind. Mus. 



Calc, I, 1881, p. 95. 

 Nycticebus coucang malaianus Stone and Rehn, Proc. Acad. Nat. 



Scien. Phila., 1892, p. 141 ; Miller, Proc. U. S. Nat. Mus., 



1903, p. 475 ; Lyon, Proc. U. S. Nat. Mus., 1906, p. 533. 

 Nycticebus sondaicus Fitzing., Sitzungsb. Meth.-Natur. Akad. 



Wiss. Wien, 1870, p. 705. 

 Nycticebus tardigradus (nee Linn.), Flower, Proc. Zool. Soc. 



Lond., 1900, p. 321 ; Bonhote, Proc. Zool. Soc. Lond., 1900, 



p. 873, (ex Malay Pen.). 



MALAYAN SLOW LORIS. 



Type locality. None given. 



