13. JACCHus. 63 



Hapale aurita. The White-eared Marmoset. B. M. 



Blackish ; minutely punctulated with yellow or reddish ; sides 

 of head, limbs, and hinder part black ; crown brown ; face large ; 

 spot on forehead and short ear- tufts grey. 



Jacchus auritus, Geoff. Ann. Mus. ; Gray, P. Z. S. 18G6 ! 



Var. 1. Back blackish, without any indication of cross band. 



Var. 2. Back red ; punctulated with narrow, faint, paler cross 

 bands, especially on the loins. 



Hub. Brazil. 



See 



a. Jacchus humeralifer, Geoff. Face, shoulders, chest, arms, 



and ear-tufta white ; thighs brown-and-white grizzled. 

 Hah. Brazil. 



b. Hapale chnjsoleucos, Natterer ; A. Wagner, Ann. Nat. Hist. 



No. 74, 1843 ; Wiegm. Archiv, viii. H. albida, mani- 

 bus caudaque splendide rutilo-fulvis, auriculis albo penicil- 

 latis. Altitudo 9", long, caudae 12|". Bahia. Mus. Vienna. 



13. JACCHUS. 



Conch of ears large, bald, with a tuft of elongated hairs, forming 

 an expanded tuft on the front edge of the ear opening. Hair of 

 sides of crown elongate. Tail annulated with black. Back cross 

 banded. Lower cutting- teeth elongate, slender, cylindrical, as long 

 as canines. 



Jacchus, Gray, P. Z. S. 18G6. 



Jacchus vulgaris. The Black-eared Marmoset. B. M. 



Blackish ; back and outside of the thighs with grey cross bands ; 

 head with white spot on upper part of nose. 



Simia .Taccliiis, Linn. Ouistiti, Buffon, H. N. xv. p. 96, t. 14. Hapale 

 Jacchus, IlUyer ; Gray, P. Z. S. 1842 ! 



Var. 1. Ear-tufts white, head black. 



Jacchus vulgaris, Geoff. Ann. dti 3fug. 

 Var. 2. Ear-tufts white, hinder part of head and back of neck 

 grey. 



Jacchus albicollis, 'S);('.r, lii-as. p. 3.3, t. 25. 

 Var. 3. Ear-tufts black, head and neck black. 



Jacchus penicillatus, Geoff. ; Spue, Bras. t. 26. 

 Var. 4. Ear-tufts black, head and neck blackish, face, temples, and 

 forehead whitish. 



Jacchus leucocephalus, Geoff. 



Var. 5. Like var. 4 ; but face, cheeks, and throat paler grey 

 brown. 



Jacchus leucogenys, Gray, List Mamm. B. M. 



