6. CHRYSOTHRIX, 53 
* Head grizeled grey and blackish ;"hairs grey or yellow, with a black 
subternunal ring, 
1. Chrysothrix sciureus. The Teetce. B.M. 
Fur grey, minutely punctated with black; back more or less golden- 
washed ; outer side of forearm yellow ; tail elongate, slender, black- 
tipped ; face whitish ; hairs of back orange, with short black tips. 
Saimiri, Buffon, H. N. xv. t.10. Simia sciurea, Zinn. Lemur leu- 
ou dee erm. Callithrix sciureus, Kwhl. Chrysothrix sciureus, 
agner ; Schreb. v. t. 9. 
Var. 1. Back grey-punctated. B.M. 
Var. 2. Back washed with golden yellow. B. M. 
Hab. Brazil. 
2. Chrysothrix ustus. The Short-tailed Teetee. B.M. 
Fur grey, minutely punctulated with black ; back golden-washed ; 
hairs of the back pale reddish yellow, with minute black tips; outer 
side of forearms like the rest of the body ; tail short, thick, black- 
tipped ; face whitish. 
Var. 1. Outer side of the forearm golden. 
Saimiris ustus, I. Geoff. Ann. du Mus. iv. t. ? Chrysothrix nigrovit- 
tatus, Wagner ; Schreb, v. t. 11. 
Var. 2. Outer side of the forearm coloured like the rest of the 
body. B.M. 
Hab. Brazil. 
Dr. Dahlbom gives as the characters of this species, from the Paris 
specimen, that the ears are nearly bald, or only slightly hairy. Our 
specimen with the grey fore legs has the ears hairy, just like the 
specimen of C. sciureus. If it were not for the shortness of the tail, 
I should consider this to be only a large variety of C. sciureus. 
** Head black; hairs yellow, with black tips. 
3. Chrysothrix entomophagus. The Black-headed Teetee. B.M. 
Fur golden brown ; hairs of back black, with long yellow tips ; 
outer side of thighs and shoulders closely punctated with black ; 
upper part, head, and tail black ; face, throat, and inside of thighs 
yellowish grey ; ears hairy; tail moderately long. 
Callithrix entomophagus, D’Orb. Voy. Amér. M. t. 4. Saimiris en- 
tomophagus, Is. Geoff. Chrysothrix entomophagus, Schreb. v. 
t. 16. i 
Var. Upper part of the head yellowish, with more or less long 
black tips to the hairs, making the fur more or less deep black. B.M. 
Hab. Bolivia, Bridges. 
