ILLUSTRATIONS (6). NOCTURNAL APE. 203 



for instance, the Limande (Plcuronectes Limanda), which is 

 found as far inland as Orleans. Some forms of sea fish, as 

 the dolphin and skate (Raia), are met with in the great rivers 

 of both continents. The fresh- water dolphin of the Apure 

 and the Orinoco differs specifically from the Delphinus gange- 

 ticus as well as from all sea dolphins.* 



(6) p. 199. " The striped nocturnal monkey" 



This is the Douroucouli or Cusi-cusi of -the Cassiquiare 

 which I have elsewhere described as the Simia trivirgata,] 

 from a drawing made by myself of the living animal. We 

 have since seen the nocturnal monkey living in the mena- 

 gerie of the Jardin des Plantes at Paris 4 Spix also met with 

 this remarkable little animal on the Amazon River and called 

 it Nyctipithecus vociferans. 



* See my Relation historique, t. ii. pp. 223, 239, 406-413. 

 t Recueil d 'Observations de Zoologie et dAnatomie comparee, t. L 

 pp. 306-311, tab. xxviii. 

 $ Op. tit., t. ii. p. 340. 



POTSDAM, JUNE 1849. 



