24 NYCTICEBUS 



c!" Hands and feet yellowish N. malaianus. 



a 1 ."' Hands dark gray, feet red- 

 dish cinnamon N. hilleri. 



b." Dorsal stripe in rufous area N. menagensis. 



c." Dorsal stripe in russet area N. pygmceus. 



Nycticebus borneanus Lyon. 



Nycticebus borneanus Lyon, Proc. U. S. Nat. Mus., 1906, p. 535 ; 

 1911, p. 136. 



BORNEAN SLOW LORIS. 



Type locality. Sakaiam River, Sanggan district, West Borneo. 

 Type in United States National Museum. 



Genl. Char. Temporal ridges forming parallel lines on top of 

 skull ; no sagittal crest. 



Color. Band between eyes white; orbital rings brownish black; 

 top of head and line down neck to middle of back, narrowing as it goes 

 until it becomes a mere point, chestnut and burnt umber, lightest on 

 head and neck; upper parts ochraceous buff, becoming tawny ochra- 

 ceous on rump, hairs tipped with silvery white, giving a frosted appear- 

 ance especially on sides of head and neck; flanks and limbs on both 

 sides, and hands and feet pinkish buff ; under parts gray with a pink 

 tinge ; tail like rump. Ex type United States National Museum. 



Measurements. Total length, 305 ; tail, 12 ; foot, 67. Skull : total 

 length, 55.9; occipito-nasal length, 55.5; Hensel, 44.1; intertemporal 

 width, 18.3; zygomatic width, 37.2; median length of nasals, 13.4; 

 palatal length, 17.5 ; length of upper tooth row, 15 ; length of mandible, 

 33.8; length of lower tooth row, 13.3. Ex type United States National 

 Museum. 



Nycticebus bancanus Lyon. 



Nycticebus bancanus Lyon, Proc. U. S. Nat. Mus., 1906, p. 536. 



ISLAND OF BANK A SLOW LORIS. 



Type locality. Klabat Bay, Island of Banka. Type in United 

 States National Museum. 



Genl. Char. Similar to N. borneanus, but paler above, and darker 

 beneath ; outer and lower wall of orbit narrow, 3-4 mm. wide ; tem- 

 poral ridges parallel on top of skull ; no sagittal crest. 



Color. White stripe between eyes ; orbital rings black ; top of 

 head and dorsal stripe to lumbar region tawny ; upper parts and limbs 

 ochraceous buff ; hands and feet paler ; under parts gray and ocbraceous 



