LEONTOCEBUS 20S 



of upper molar series, 8 ; length of mandible, 26 ; length of lower molar 

 series, 10. Ex type British Museum. 



Leontocebus iLLiGERi (Pucheran). 



Hapale illigeri Pucher., Rev. Mag. Zool., 1845, p. 336; Wagn., 



Schreb., Saugth. Suppl., V, 1855, p. 134. 

 Midas dei'illii Sclat., Proc. Zool. Soc. Lond., 1871, p. 20, pi. VIII, 



(nee I. GeofTroy). 

 Hapale illigeri Schleg., Mus. Pays-Bas, Simiae, 1876, p. 263. 

 Midas illigeri I. Geoff., Cat. Primates, 1851, p. 65; Dahlb., Stud. 



Zool. Fam. Reg. Anim. Natur., fasc. I, 1856, pp. 192, 196; 



Slack, Proc. Acad. Nat. Scien. Phil., 1861, p. 464; Reichenb., 



Vollstand. Naturg. Affen, 1862, p. 13, no fig. ; Gray, Cat. 



Monkeys, Lemurs and Fruit-eating Bats, Brit. Mus., 1870, 



p. 67, var. d ; Thos., Proc. Zool. Soc. Lond., 1880, p. 395. 

 CEdippmidas illigeri Elliot, Cat. Mamm. Field Columb. Mus., VIII, 



1906, p. 554, Zool. Ser. 



ILLIGER'S TAMARIN. 



Type locality. Colombia. 



Geogr. Distr. Colombia ; banks of the Copataza River, Ecuador, 

 (Thomas). Type in Paris Museum. 



Genl. Char. Hairs on upper back very long, forming a mantle. 



Color. Male. Forehead between eyes, face beneath eyes and 

 upper and lower lips, white; head, hands, feet, inner side of arms and 

 tail except at base, black ; upper part of back and shoulders, liver 

 brown speckled with black ; outer side of arms, and under part of body 

 dark liver brown slightly speckled with black ; lower back black, hairs 

 broadly tipped with ochraceous ; sides of rump and legs, and base 

 of tail, dark reddish, but lighter than upper back. Ex type Paris 

 Museum. 



Female. Resembles the male, but the hair on upper back is shorter, 

 and the arms, legs, and under parts are a lighter and brighter red. 



Measurements. In size about equal to L. labiatus; tail, 380. 

 Skull: occipito-nasal length, 46; zygomatic width, 31; intertemporal 

 width, 24; palatal length, 15; breadth of braincase, 26; median length 

 of nasals, 6; length of upper molar series, 8; length of mandible, 31 ; 

 length of lower molar series, 10. 



The type of this species is believed, according to Pucheran 

 (1. c.) to have come from Colombia, and Thomas has received speci- 

 mens from the banks of the Copataza River, Ecuador. It has gener- 

 ally been given as from eastern Peru, but it is probable that the 



