206 LEONTOCEBUS 



examples from that portion of South America were not this species, 

 but L. WEDDELI. 



Leontocebus tbipartitus (A. Milne-Edwards). 



Midas tripartitus A. Milne-Edw., Archiv. Mus. Paris, 2me Ser., I, 

 1878, p. 161, pi. VIII. 



Type locality. Banks of the Rio Napo, Ecuador. Type in Paris 

 Museum. 



Genl. Char. Remarkable for the black head, golden shoulders and 

 upper back. 



Color. Head to nape all around, and throat to chest, black ; back 

 of neck, and shoulders to middle of flanks, golden yellow ; rest of upper 

 parts and thighs to knees, iron gray; arms, outer and inner sides, 

 under parts and inner side of legs, and outer side below knees, orange 

 red; hands and feet dark reddish brown mixed with gray; face bare, 

 lips covered with long white hairs; tail reddish chestnut for basal 

 fourth, remainder black. Ex type Paris Museum. 



Measurements. Total length, about 460 ; tail, 200. Skull : occip- 

 ito-nasal length, 45; palatal length, 15; zygomatic width, 31; inter- 

 temporal width, 22 ; median length of nasals, 7 ; length of upper molar 

 series, 9 ; length of mandible, 29 ; length of lower molar series, 10. Ex 

 type Paris Museum. 



This strikingly colored species, so unlike any of the genus, is 

 recognizable at once. The jet black head and throat, contrasted with 

 the bright colors of the body make it most conspicuous. The type 

 in the Paris Museum has retained its color so far remarkably well, and 

 it is to be regretted that it should be permitted to remain exposed to the 

 sunlight which will eventually destroy most of the coloring, which now 

 eminently distinguishes it from the other species of the genus. 



Leontocebus lagonotus (Espada). 



Midas lagonotus J. de la Espada, Bol. Revista Univ. Madrid, 1870, 

 p. 57 ; A. Milne-Edw., Nouv. Archiv. Mus. Paris, Hist. Nat., 

 I, 1878, p. 161, (note) ; Cabrera, Anal. Soc. Esp. Hist. Nat., 

 XXIX, 1900, p. 31. 

 Type locality. Upper Amazon. Type in Madrid Museum. 

 Genl. Char. Differing especially from L. tripartitus in having 

 the mantle dark ferruginous, not golden. 



Color. Head black; mantle, arms and legs dark ferruginous; 

 back dark gray and black ; under parts, hands, feet and tail black ; base 



