222 CALLITHRIX 



Geogr. Distr. Provinces of Matto Grosso, Para, (I. Geoff.). 

 Brazil; Bolivia, (I. Geoffroy). 



Genl. Char. Face naked ; ears exposed, naked ; tail uniform, black. 



Color. Forehead blackish brown ; top of head, neck, shoulders and 

 outer side of arms dark wood brown ; back mummy brown ; legs darker 

 brown ; hands grayish brown ; feet blackish brown ; under parts and 

 inner side of arms yellowish white ; inner side of legs orange buff above 

 ankles grading into buff on upper part; broad stripe on outer edge of 

 thighs, extending nearly to center of back white ; tail black. 



Measurements. Skull : occipito-nasal length, 43 ; Hensel, 32 ; zy- 

 gomatic width, 30; intertemporal width, 22.5 ; palatal length, 15 ; width 

 of braincase, 25 ; median length of nasals, 6 ; length of upper molar 

 series, 9 ; length of mandible, 30 ; length of lower molar series, 10. 



The presumable type of C. melanura in the Paris Museum is so 

 faded that it would be useless to attempt a description from it, the 

 various shades of brown having practically become one, the legs alone 

 being somewhat darker than the back, grading into the blackish brown 

 of the feet. 



Caixithrix leucopus (Gunther). 



Hapale leucopus Gunther, Proc. Zool. Soc. Lond., 1876, p. 743 ; 

 Anders., Cat. Mamm. Ind. Mus. Calc, Pt. I, 1881, p. 89; 

 Forbes, Handb. Primates, I, 1894, p. 134 ; Elliot, Cat. Mamm. 

 Field Columb. Mus., VIII, 1906, p. 553, Zool. Ser. 



WHITE-FOOTED MARMOSET. 



Type locality. Medellin, Province of Antioquia, Colombia. 



Geogr. Distr. Province of Antioquia, Colombia. Range unde- 

 termined. 



Genl. Char. Hair on back and sides long, silky ; ears large, naked, 

 not tufted ; hands and feet white. 



Color. Top and sides of head and face covered with short grayish 

 white hairs ; nape and upper parts brownish gray, some examples being 

 a yellowish gray ; arms from above elbows to wrists white ; legs below 

 knees grayish brown ; hands and feet whitish ; throat dark brown ; 

 under parts and inner side of limbs bright cinnamon rufous ; tail seal 

 brown, tip whitish. 



Measurements. Skull : occipito-nasal length, 47 ; Hensel, 32 ; zygo- 

 matic width, 33 ; intertemporal width, 24 ; median length of nasals, 7 ; 

 width of braincase, 29; length of upper molar series, 9; length of 

 mandible, 33 ; length of lower molar series, 7. 



