192 CERCOPITHECUS 



middle incisors to upper outline of orbits much greater; forehead 

 higher; superior outline of skull more curved. 



Color. Like C. midas, but hands, feet, and tips of hairs on back, 

 tawny ochraceous instead of white. Ex type in Paris Museum. Skull 

 in specimen. 



Measurements. Size equal to C. midas. Skull : occipito-nasal 

 length, 50 ; Hensel, 33 ; zygomatic width, 35 ; intertemporal width, 25 ; 

 palatal length, 25.5 ; breadth of braincase, 30 ; median length of nasals, 

 10; length of upper molar series, 10; height of face, from base of 

 middle incisor to top of frontal between orbits, 20 ; length of mandible, 

 34 ; length of lower molar series, 12. Ex specimen British Museum. 



A single specimen is in the British Museum Collection procured 

 by G. K. Cherrie at Ipoussin on Approuague River, Cayenne. This 

 resembles C. midas with the exceptions given above, but the coloring 

 of the specimens from the different localities is striking and arrests 

 the attention at once. The nasals are much longer, and the difference 

 in the height of the face of the skull is remarkable. 



Geoffroy's type in the Paris Museum is in an excellent state of 

 preservation, but the hands and feet are not so deep in color as those 

 of the British Museum specimen, having faded considerably. Other- 

 wise the examples are alike. 



Cercopithecus ursulus (Humboldt). 



Simia (Midas) Ursula Humb., Obs. Zool., I, 1811, (1815), p. 361. 



Midas ursulus E. Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 1812, 

 p. 121; I. Geoff., Cat. Primates, 1851, p. 63; Dahlb., Stud. 

 Zool. Fam. Reg. Anim. Natur., fasc. 1, 1856, p. 194 ; Reichenb., 

 Vollstand. • Naturg. Affen, 1862, p. 10, figs. 37, 38; Bates, 

 Natur. Riv. Amaz., II, 1863, p. 321 ; Gray, Cat. Monkeys, 

 Lemurs and Fruit-eating Bats, Brit. Mus., 1870, p. 89 ; Forbes, 

 Handb. Primates, I, 1894, p. 148. 



Hapale Ursula Wagn., Schreb., Saugth. Suppl., I, 1840, p. 246 ; 

 V. 1855, p. 135 ; Schleg, Mus. Pays-Bas, Simije, 1876, p. 265 ; 

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



Midas tamarin Slack, Proc. Acad. Nat. Scien. Phila., 1861, p. 464. 



Cercopithecus ursulus Elliot, Bull. Am. Mus. Nat. Hist., N. Y., 

 XXVIII, 1911, p. 342. 



NI'GRO TAMARJN. 



Type locality. Para, Lower Amazon. 



Geogr. Distr. Lower Amazon, Para, and near the mouth of the 

 River Tocantins. (Hoffmannsegg). 



