LEONTOCEBUS 205 



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 devillii Sclat, Proc. Zool. Soc. Lond., 1871, p. 20, pi. VIII, 



(nee I. Geoffroy). 

 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. 

 CEdipomidas 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 



