224 SOUTH-AMERrCAN MAMMALS. 



Dactylomy s typus Is. Geofifroy. 



The type of this rare and splendid species is in the 

 Paris-Museum : its exact locality is unknown. The second 

 recorded specimen , a male , from Natterer's voyage , is in 

 the Vienna-Museum and has been shot on the banks of 

 the Rio-Negro. Deville records that »les différents sujets 

 rapportes par I'expedition (de Castelnau et Deville) viennent 

 de la Mission de Sarayacu , riviere de I'Ucayale , Pampa 

 del Sacramento." Two specimens are in the British-Museum, 

 from the Rio-Napo (P. Z. S. L. 1876, p. 743). Our spe- 

 cimen — an adult male — has been collected in North- 

 Peru or Ecuador by Mr. J. H., 7 August 1881. The certain 

 patria of this species thus is North- West-Brazil , Ecuador 

 and Northern- Peru. 



Our specimen presents the following measurements: 



m.m. 

 Length of body from tip of nose to root of tail . 328 



» » tail 406 



» » hairy basal portion of tail 90 



» » hind foot 59 



» » fore foot 32 



» » skull 78 



» » nasal bones 26 



Width of skull 37 



Length of upper molar series 20 



» » lower » » 21 



Distance between incisor and first molar (upper jaw) 17 

 » » » » » » (lower jaw) 9 



As there is in the two British-Museum specimens no 

 skull and as Wagner is silent on this point in the descrip- 

 tion of Natterer's specimen , I think that up to this time 

 the only known skulls of this species are those in the 

 Paris-Museum and the skull in the Leyden Museum. 



There is a very badly drawn figure of the type-specimen 

 in the »Magasin de Zoölogie, 1840, pi. 20." The skull has 

 been tolerably well figured in the »Nouvelles Anuales du 



Notes from the Xjeydeu Museum, Vol. IX. 



