220 CALLITHRIX 



GEOGRAPHICAL DISTRIBUTION OF THE SPECIES AND SUBSPECIES. 



The majority of the species of this genus are natives of Brazil, one 

 only extending its range into Bolivia, and one inhabiting Colombia. C. 

 GOELDi has no ascertained locality, as the unique type was brought alive 

 to the City of Para, and it was not known whether it was captured in 

 the vicinity or taken farther to the westward on the Amazon, or on 

 one of its tributaries. At Santarem, at the mouth of the Rio Tapajos 

 C. SANTAREMENSis was procurcd, but its range is quite unknown. C. 

 JACCHUS is stated to have been obtained on the Island of Marajo, lying 

 between the mouths of the Amazon and the Rio Para. In the vicinity 

 of Bahia C. albicollis has been obtained, and south of the Bay Todos 

 OS Santos, C. humeralifer occurs. C. penicillata ranges from, and 

 including the Province of Goyas, through that of Minas Geraes, and in 

 Espirito Santo on the east coast, between 14 and 17 degrees South 

 Latitude; and C. p. jordani is found in the south west portion of 

 Minas Gerses. 



In the last named Province C. leucocephala occurs, ranging into 

 the Province of Espirito Santo ; and in Matto Grosso C. argentata is 

 found. This species is also met with in Bolivia, and a specimen ac- 

 cording to I. Geoffroy is in the Paris Museum brought from Para by 

 Castelnau and Deville. On the banks of the Upper Parana to the 

 Province of Sao Paulo, C. aurita occurs, while in the last named 

 Province at Engenhiero Reeve C. flaviceps was procured. At Booba 

 on the Lower Rio Madeira C. chrysoleuca was obtained; and in the 

 forests along the Rio Solimoens and Rio Ucayali, C. pygm.ea dwells, 

 and lastly at Medellin in the Province of Antigua, C. leucopus was 

 found. 



KEY TO THE SPECIES AND SUBSPECIES. 



A. Tail without rings. 



a. Tail black, feet blackish brown C. argentata. 



b. Tail seal brown, tip white, feet white C. leucopus. 



c. Tail and feet golden yellow C. chrysoleuca. 



d. Tail and feet black C. goeldi. 



B. Tail with rings. 



a. Head and neck white C. santaremensis. 



b. Center of head tawny ochraceous, rest black C. aurita. 



c. Middle of head dark brown. 



a.' Above light gray C. penicillata. 



