8. NYCLIPITHECUS. 57 
See Miriquouina, Azara, Simia Azare, Humb. Zool. i. p. 359. 
Pithecia miriquouina, Kuhl, Beitr. Red beneath, with black 
hand. Hab. Paraguay. 
IL. Fur soft, woolly, without any longer hairs; hands and feet black. 
10. Callithrix melanochir. Zhe Black-handed Teetee. 
Crown, throat, and inside of the limbs black and grey and black 
and testaceous mixed. 
Var. 1. Fur less red. 
Var, 2. Tail bright red.—JI. Geoff’. 
Callithrix melanochir, Pr. Max. Abbild. iv. t. (type in Mus. Paris). 
Hab. Brazil: Bahia. 
11. Callithrix gigo. The Grey Teetee. 
Crown nearly all black, slightly grey-dotted; sides of the face, 
gular band, and inside of the limbs black. 
Callithrix gigo, Spix, Bras. p. 22, t. 16; Is. Geoff. 
Var.? Throat whitish. 
Callithrix cinerascens, Spiz, Bras. p. 20, t. 14. 
Hab. Brazil. 
Tribe V. NYCTIPITHECINA. 
Grinders §.8. Cutting-teeth vertical, in a regular series with the 
canines. Lower jaw dilated behind. Eyes large, nocturnal. Nos- 
trils small, close together, as in the old-world monkeys. 
8. NYCTIPITHECUS. 
Eyes very large, lateral; hair of the orbit radiating like the fea- 
thers of a nocturnal bird. Septum of nose narrow. Ears large. 
Claws small, weak. Spinous processes of the lumbar vertebre acutely 
triangular, incumbent. 
Aotus, Humboldt. Aotes, Jardine (misprint). Nocthora, F. Cuvier. 
Nyctipithecus, Spix, Bras. 1823. Chirogaleus, species, Vigors and 
Horsfield. 
Nocturnal, with the habits of the Jacchus, living on insects and 
birds. The ears of Humboldt’s specimen seem to have been imperfect, 
which induced him to call it Aotus. 
I. Head with three streaks ; tail cylindrical. 
a. Frontal spot elongate, yellowish ; head-streaks linear, 
elongate; fur short. No. 1. 
6. Frontal spot short, white; head-streaks short; central 
rhombic. No. 2. 
II. Head with a round pale spot over each eye ; no head-streaks ; 
fur long; tail bushy. 
