SENIOCEBUS 185 



1912. D. G. Elliot, in Bulletin of the American Museum of Natural 

 History, Nezv York. 

 Sen'iocebus meticulosus first described. 



GEOGRAPHICAL DISTRIBUTION OF THE SPECIES. 



The most northern country inhabited by the Tamarin Monkeys is 

 Central America where in the southern portion, in Costa Rica and 

 extending its range through Panama to the Isthmus, QEdipomidas 

 GEOFFROYi is found. In the Guianas, northern South America, Cer- 

 copiTHECUS MIDAS is a dwcllcr of the English and Dutch Guianas, and 

 Cercopithecus rufimanus is met with in French Guiana, and on the 

 banks of the Rio Araguay, Province of Goyas, Brazil, and as stated 

 by Tschudi, also in Peru. The great territory of Brazil contains, as 

 would be supposed, the greatest number of species, twenty-four in all 

 including C. rufimanus just mentioned. In the vicinity of Para on 

 the lower Amazon, near the mouth of the Rio Tocantins, C. ursulus is 

 met with, and in the forests through which the Ilheos and Pardo flow 

 in eastern Brazil, Leontocebus chrysomelas occurs ; and strangely 

 enough, though it is not known from Western Brazil, yet, according 

 to Tschudi, it is a native of Peru ; and on the Rio Negro and on the 

 Upper Amazon west of Barra, Seniocebus bicolor is found; and on 

 the north shore of the Amazon at Faro, near the mouth of the River 

 Yamunda Seniocebus martinsi was taken. In south eastern Brazil 

 in the Province of Rio Janeiro, L. rosalia is found, and if the animal 

 mentioned by Bates (1. c.) under the name of Midas leoninus is the 

 same, then it extends its range to the Upper Amazon, although there 

 are no records of its appearance in the intervening districts. In the 

 Province of Sao Paulo near Ipanema, L. chrysopygus is met with, and 

 on the banks of the Rio Solimoens, and as stated by Castelnau and 

 Deville, also at Pebas, Peru, L. nigricollis occurs. In the forests 

 between the rivers Solimoens and Iga, L. mystax and L. fuscicollis 

 dwell; and on the banks of the Rio Purus, Upper Amazon, L. im- 

 PERATOR has been procured. Near the Rio Javari on the borders of 

 Brazil and Peru, L. nigrifrons occurs, and its range extends to the 

 Rio Copataza in Ecuador. Between the Rio Solimoens and Rio Javari, 

 L. LABiATUs has been obtained, and Tschudi states it is also a native 

 of Peru. At Tunambins on the Upper Amazon L. thomasi was 

 obtained, its range unknown, and still more indefinite, somewhere on 

 the Upper Amazon, no locality given, L. lagonotus was taken. At 

 Popayan, Colombia, the monkey seen by Humboldt and called by him 



