C ALLICEBU S 255 



Saugth. Suppl., V, 1855, p. 112; Dahlb., Stud. Zool. Fam. 

 Reg. Anim. Natur., fasc. I, 1856, pp. 152-154; Casteln., 

 Exped. Amer. Sud, 1855, p. 10; Reichenb., Vollstand. Naturg. 

 Affen, 1862, p. 24, fig. 68 ; Schleg., Mus. Pays-Bas, Simise, 

 1876, p. 234; von Pelz., Bras. Saugeth., 1883, p. 19; Weldon, 

 Proc. Zool. Soc. Lond., 1884, p. 6, figs. 1, 2, 4, 5, 6; Forbes, 

 Handb. Primates, I, 1894, p. 165. 

 CalUthrix gigo Gray, Cat. Monkeys, Lemurs and Fruit-eating Bats, 

 Brit. Mus., 1876, p. 57. 



GRAY TITI MONKEY. 



Type locality. Near Ilheos, south of Bahia, Brazil. Type in 

 Munich Museum. 



Geogr. Distr. South of Bahia near Ilheos, (Spix) ; New Frei- 

 bourg, between the Rio Parahyba and the mountains north of Bay of 

 Rio de Janeiro, (Schlegel). 



Color. Male. Face naked, black; narrow line on forehead and 

 side of face; ears, hands and feet black; hairs on top of head short, 

 black with grayish white tips ; hairs on upper parts long, woolly, black- 

 ish brown at base, remainder reddish brown ; limbs and flanks like 

 back but darker, and blackish on outer side; under parts yellowish 

 gray; tail cinnamon rufous, with many black hairs intermingled. Ex 

 type Munich Museum. 



Female. Has the lower back decidedly reddish, otherwise like the 

 male. 



Measurements. Total length, 975; tail, 520; foot, 105. Ex type 

 Munich Museum. Skull: occipito-nasal length, 58; Hensel, 46; zygo- 

 matic width, 38; intertemporal width, 31; palatal length, 20; breadth 

 of braincase, 33 ; median length of nasals, 9 ; length of upper molar 

 series, 15; length of mandible, 43; length of lower molar series, 18. 

 Ex specimen in British Museum. 



Spix's figure of this species, like that of C. nigrifrons, in no way 

 represents the type, which is a darker animal and of quite a dififerent 

 color. Spix's description however is fairly correct. 



Cat.tjcebus peesonatus (E. Geoffrey). 



CalUthrix personatus E. Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 

 1812, p. 113, (Espece inedite) ; Kuhl, Beitr. Zool., 1820, p. 

 40; Desm., Mamm., 1820, p. 86; Spix, Simiar. et Vespert. 

 Bras., p. 18, pi. XII ; Wagn., Schreb., Saugth. Suppl., I, 1840, 



