8. NYCTiriTUKCTJS. 57 



See Miriquouina, Azara. Simia Azarce, Humb. Zool. i. p. 359. 

 Pithecia miriquoidna, Kuhl, Bcitr. Red beneath, with black 

 hand. Hab. Paraguay. 



II. Fur soft, woolly, tvithoid any longer hairs ; hands and feet black. 



10. Callithrix melanochir. The 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.—/. 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. 



Callithiix gigo, Spix, Bras. p. 22, t. 16 ; 7s. Geoff. 

 Var. ? Throat whitish. 



Callithrix cinerascena, Sj)ix^ Bras. p. 20, t. 14. 

 Hab. Brazil. 



Tribe V. NYCTIPITHECINA. 



Grinders -l.f . 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 vertebrae acutely 

 triangular, incumbent. 



Actus, Humboldt. Aotes, .Tardinc (mispiint). Nocthora, F. Cuvier. 

 Nyctipithecus, Spix, Bras. 1823. Chirogaleus, species, Vigors and 

 Horsjivld. 



Nocturnal, with the habits of the lacchus, living on insects and 

 birds. The cars of Humboldt's specimen seem to have been imperfect, 

 which induced him to call it Actus. 



I. Head with three streaks ; tail cylindrical. 



a. Frontal spot elongate, yellowish ; head-streaks linear, 

 elongate; fur short. No. 1. 



b. 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. 



