THE TAMARINS. 143 
and posterior limbs, and the triangular golden spot on the 
werex. Ihe hairs of this spot are golden throughout their 
entire length, in this respect resembling another closely related 
Upper Amazonian species, the so-called BONNETED TAMARIN 
(MZ. pileatus, Is. Geoffr.), from which it can readily be dis- 
tinguished by the black colour of the under surface. The 
back of the Bonneted ‘Tamarin is also varied, black and grey, 
the limbs and tail are blackish, and the lips white. 
VI. DEVILLE’S TAMARIN. MIDAS WEDDELL. 
Midas weddellit, Deville, Rev. et Mag. de Zool., 1849, p. 55. 
Midas dewltit, Is. Geoffr., Cat. Méth. Primates, p. 64 (1851); 
Castelnau, Expéd. Amér. Sud, Mamm., pl. vi., fig. 2 
(1855); Gray, Cat. Monkeys Brit. Mus., p. 67 (1870). 
mindas teucogenys, Gray, P. 7.5. 1865, p: 7353 id. Cat. 
Monkeys Brit. Mus., p. 67 (1870). 
Flapale devillet, Schi., Mus. Pays Bas, vii., p. 262 (1876). 
Hlapale weddettt, Schl., t.c. p. 262. 
Characters.—I'ur of back ringed with grey ; that of the head, 
neck, and front of the fore- and hind-limbs, tail, hands, and 
feet black ; loins, thighs, legs, and base of tail bright maroon. 
Distribution.—Obtained by MM. Castelnau and Deville, at 
Sarayacu, in the Peruvian Amazons. 
VII. THE BLACK-FRONTED TAMARIN. MIDAS NIGRIFRONS. 
Midas nigrifrons, Geoffr., Cat. Méth. Primates, p. 64 (1851). 
AMhidas flavifrons, var. c. Midas nigrifrons, Gray, Cat. Monkeys 
Brit. Mus., p. 67 (1870). 
Hlapate nigrifrons, Schl., Mus. Pays Bas, vil., p. 263 (1876). 
